Contact dermatitis

Contact Dermatitis

Contact dermatitis is redness and a rash that appear on the skin as a result of contact with a substance. It usually occurs when a particular substance irritates the skin. These substances may be soaps, cosmetics, jewellery or certain plants such as stinging nettle. Contact dermatitis is sometimes caused by allergies.

Although contact dermatitis is not a dangerous disease, it can be very uncomfortable because it often causes itching.

Symptoms of Contact Dermatitis

Contact dermatitis occurs in the area where the irritating substance has touched the skin. For example, contact dermatitis may appear on and above the ankle after brushing against stinging nettles while walking through grass.

Contact dermatitis usually starts within a few minutes of contact with the substance and clears within a few hours. Sometimes, however, it may not clear for up to 4 weeks.

The symptoms of contact dermatitis are:

  • Redness and rash
  • Itching
  • Dry, cracked skin (if the problem has been going on for a long time)
  • Blisters (if the problem is severe)
  • Swelling, burning, tenderness

The severity of contact dermatitis symptoms varies depending on:

  • How long you are exposed to the substance
  • The strength of the substance causing the rash
  • External factors such as heat, wind and sweating
  • Genetics

Causes of Contact Dermatitis

Contact dermatitis occurs because a substance irritates the skin on contact or triggers an allergic reaction in the body. Any one of thousands of substances can cause it. Common ones include:

  • Soaps, deodorants, cosmetics
  • Ivy, stinging nettle, oak
  • Hair dyes and straighteners
  • Nickel (found in some jewellery)
  • Latex
  • Leather (because of the chemicals used in processing it)
  • Orange, grapefruit and tangerine juice
  • Some medicines (such as antibiotic creams and oral antihistamines)
  • Certain airborne substances

Treatment of Contact Dermatitis

Treatment begins first of all with finding the substance causing the contact dermatitis, because as long as you stay away from the substance causing the symptoms, no problem arises. Your doctor may request a patch test so that a possible allergy and the allergen can be diagnosed.

Apart from this, the following measures can be taken:

Wash the Skin Thoroughly
The area should be washed with plenty of water to remove all traces of the substance that touched the skin.

Avoid the Irritating Substance
Once the substance causing the redness is found and avoided, the contact dermatitis will not continue.

Try Not to Scratch
However much you feel the urge, try not to scratch, because this will make the symptoms worse. In some cases it can lead to infection.

Cold Water
Cold water will soothe the skin and reduce the itching.

Cotton Clothing
Cotton clothing will keep irritation to a minimum.

Corticosteroid Creams and Tablets
Corticosteroids are the most effective treatment for contact dermatitis. Unfortunately, however, they also have many side effects, so use them only after consulting your doctor.

Antihistamine Creams
These are very effective in cases caused by an allergic reaction.

Anti-Itch or Calamine Lotions
These lotions can be used to reduce itching, albeit temporarily.

Irritant Contact Dermatitis

Irritant contact dermatitis, is a contact eczema that can occur in response to many substances capable of damaging the skin; allergic mechanisms play no role in it and no prior sensitisation is required. Irritant contact dermatitis accounts for 80% of all contact dermatitis. It also accounts for 30% of occupational diseases in industrial societies. Both environmental and personal factors play a part in the development of irritant contact dermatitis. The environmental factors include the dose of the irritant, the duration of contact, its chemical and physical properties, and conditions such as temperature and humidity. The personal factors depend on things such as the area of skin affected, age, ethnicity and sex.

Diagnosing irritant contact dermatitis is dermatologically straightforward, especially for eczema that is prominent on the arms, hands and face. However, distinguishing between environmental and personal causes of the eczema and determining the clinical type of irritant contact dermatitis in environmental settings is more involved, and some diagnostic tests need to be carried out. When irritant contact dermatitis is left untreated, itching, scratching and inflammation of the skin increase progressively, which can lead to serious skin infections; the entry of microorganisms such as fungi and bacteria into the skin layers can accelerate and the skin can be severely damaged.

What can be done to treat irritant contact dermatitis?

  • Treatment starts first with finding the substance causing the irritant contact dermatitis, and then avoiding it.
  • The area is washed with plenty of water to remove all traces of the substance that has been in contact with the skin.
  • Scratching spreads the symptoms further and can cause infection, so however much you want to scratch, you should avoid doing so.
  • When choosing clothes, cotton clothing should be preferred as it keeps irritation to a minimum.
  • Creams, tablets and lotions should be used in treatment. Because these medicines can have side effects, they should be used only after consulting a doctor and obtaining the doctor's approval.
  • As a natural remedy, carob molasses, which is said to be very effective in cases of irritant contact dermatitis and eczema, can be taken. Taking at least 1-2 tablespoons a day may lead to an improvement in the condition.

Hand Eczema

Hand eczema, Eczema is not known as a dangerous disease, but it can look unpleasant. Eczema is among the most common skin diseases in the population – so much so that one in every two people may have a history of eczema. Certain people and occupational groups are at risk of eczema. As well as on the hands, eczema can appear on the face, the scalp, the penis in men, and elsewhere. The underlying causes of hand eczema are generally chemicals such as detergents, bleach and soap, and stress. Very rarely, hand eczema can appear without any cause.

Hand eczema develops most often in homemakers due to heavy use of detergents, in hairdressers and barbers due to hair dye, in construction workers due to cement, and in hospital healthcare staff due to the latex in gloves. These people should have as little contact as possible with the substance causing the eczema. If there is no contact with these substances, the eczema regresses within 10-15 days.

Symptoms of hand eczema: mainly take the form of itching. Besides itching, there is redness, cracking, weeping and thickening of the skin. If the cracked areas become infected, the condition worsens and antibiotics are needed. Allergy and reactions may also develop.

In left-handed people, hand eczema is generally seen first on the right hand and on the thumb and index finger.

It can then spread to the palm, between the fingers and even to the back of the hand.

People with hand eczema need to avoid doing and using certain things. In particular, homemakers should take care not to use detergents and perfumed products, should use bath oils instead of soap and should not wash their hands too often, and should protect themselves from extreme heat and cold and try not to be in such environments. In addition, direct contact with woollen items such as carpets and blankets should be avoided. Getting a new pet, changing bedding and constantly using different brands of detergents and similar products can make eczema worse, so such things should be avoided.

It is very important to prevent hand eczema from recurring and to start treatment early. To prevent eczema from recurring, the hands should always be moisturised with a hand cream after washing. There are also herbal remedies for hand eczema. These include: soaked mulberry molasses, or boiled mulberries, can be applied to the eczema before going to bed at night. 10-15 g of sage is boiled in a glass of water for 5 minutes, and this water is used to wash the hands and as a compress. The pulp obtained by boiling heather seeds is applied to the hands. Fresh wild garlic juice can also be applied to the hands. A balm made from mashed banana and lemon juice is said to be good for hand eczema.

Lick Dermatitis

Acral lick dermatitis is also known as lick granuloma. The term acral refers to the feet and legs. This condition is seen mostly in dogs and rarely in cats. The dog keeps licking just one area of its leg. As a result, the hair falls out in the area it licks, sores open and the skin thickens. Its typical appearance is a hairless, raised, oval lump of skin on the front of the forelegs. Sometimes another leg is also affected. The most common sites are at the level of the carpal bones (wrists) and below the knee on the hind leg.
It is seen more often in Dobermans, Great Danes, Labradors, Irish Setters, Golden Retrievers and German Shepherds than in other breeds, and more often in male dogs than in females. The disease can appear at any age, but it is more often noticed, and the dog taken to a vet, at five years of age or older.
Most of the time, no underlying cause of acral lick dermatitis can be found. The disease is thought to be psychogenic in origin and is regarded as a behavioural disorder. Excessive licking and chewing can develop out of boredom or as attention-seeking behaviour. Sometimes anxiety also causes excessive licking. Such excessive behaviours are generally actions aimed at relieving these psychologically based disorders.

Phytophotodermatitis

A phototoxic reaction caused by contact with plants. Photosensitising substances – mostly furocoumarins from hogweed, goosefoot, buttercup and fig trees – together with the UVA in sunlight trigger an acute dermatitis. Streaky or erythematobullous lesions with bizarre configurations are seen at the sites of contact. The hyperpigmentation that follows usually lasts for weeks or months.

Perfume stain: Apart from plants, sunlight can cause brown patches where perfume, cologne and certain cosmetics have come into contact with the skin. This type of pigmentation, which we usually see on the neck, is called 'berloque dermatitis'.

Acute Irritant Contact Dermatitis: This results from exposure to a single strong irritant or caustic substance, or to a series of minor physical and chemical contactants. It causes an acute inflammatory reaction in the skin. The subjective complaint is usually a burning or stinging sensation. The skin lesions are very sharply demarcated and limited to the area that came into contact with the contactant. The predominant primary lesions are erythema and oedema and, in more severe reactions, vesicles/bullae or necrosis. The speed of the acute irritant response usually depends on the strength of the causative agent. Strong alkalis and acids in particular cause a toxic reaction within a few minutes. Unless necrosis has developed, the resulting skin reactions heal shortly after the effect of the irritant has ended.

 

Acute Eczema: It starts with itching and a burning sensation in the skin. Then small sacs called vesicles form, the size of a pinhead or larger, containing clear fluid. Sometimes these vesicles dry up and crust over without becoming painful; this is called dry eczema. Sometimes the vesicles merge to form fluid-filled blisters (bullae), become inflamed and turn purulent; this is called infected or weeping (impetiginised) eczema. When the oozing stops, the skin is thin, fragile and red, almost as if varnished; fine white flakes called scales form, and once these have shed, the skin returns to normal.
Acute eczema sometimes does not clear and, continuing in various forms, becomes chronic.

Subacute Eczema

In subacute eczema, numerous scales and crusts are seen on a mildly erythematous background. The scales, particularly at the edges of the lesion, take the form of small rings (a few mm, or even less than one mm). Because they resemble the white collars worn on primary-school smocks, these scales are called "collarette" scales.

Chronic Eczema

Chronic eczema, is known as a skin disease that is bothersome and unsightly, but it is not dangerous, and it can be brought under control with simple treatment. It has been found that one in every twelve people experiences chronic eczema at some point in their life. In medicine, chronic eczema is known as dermatitis, and it is a skin condition that is more common in young children. As well as causing itching and discomfort, chronic eczema gives an unsightly appearance to exposed areas such as the hands, arms and face. It is known that chronic eczema is largely a hereditary condition, and it produces common symptoms in most patients. For this reason, knowing the symptoms of the disease well is important for early diagnosis and better treatment success.

Chronic eczema, in its acute phase causes redness, swelling and tiny fluid-filled blisters, and weeping is prominent as the condition develops. Patients with eczema experience severe itching and complain of a burning sensation on their bodies. In some patients, there may be only itching and burning without redness or scaling.

Causes of Chronic Eczema: The triggers of chronic eczema are varied and differ according to the type of eczema. Chronic eczema is usually caused by allergy, but emotional distress can also lead to eczema. Many substances we encounter in daily life – such as detergents, soaps, dyes, clothes, perfumes, cologne, make-up products, creams and lotions, rubber materials and metals – can cause chronic eczema through contact with the skin.

Among the causes of chronic eczema: in families where allergic diseases such as asthma or hay fever are common, children are more likely to have eczema; in other words, it is hereditary. It is also known that children fed on cow's milk are more likely to develop chronic eczema.

Symptoms of Chronic Eczema: In chronic eczema, the inflamed area of skin becomes red and itchy. In addition, over time the inflammation dries up, spot-like lesions appear on top of it, and blisters form in some areas of the body. If the eczema area is scratched, the infection spreads to a wider area, causing bleeding of the skin, and the bleeding area becomes inflamed and painful. Germs entering through cracks in the skin can spread throughout the body. An eczema area irritated by scratching can be very uncomfortable.

Chronic eczema first shows itself on the face and scalp and then appears on the arms and legs, particularly where the skin folds or where clothes rub. The discomfort caused by the disease is due mostly to scratching and to infections caused by germs entering through the cracks.

Treatment of Chronic Eczema:

Chronic eczema is not known as a severe disease that could be considered dangerous, but it can cause discomfort. The most important measure for people with eczema to stay comfortable is not to scratch the lesions. Babies with eczema should wear fingerless mittens made of cotton fabric, to stop them scratching the areas affected by eczema.

Eyelid Eczema

Eyelid eczema, is a persistent health problem. It is common after the age of 40, and eyelid eczema is more common in women. Skin problems and environmental influences cause eczema on the eyelid. Eczema causes dryness, redness and itching of the eyelid. Eczema on the eyelid can become infected and inflamed, which can harm eye health.

When eczema develops on the eyelid, loss of vision may occur. Persistent itching of the eyelid develops. Eczema may have a lasting effect on the area where it occurs. Because eye health is important, the eczema should be treated. Failure to start treatment early can harm eye health. An eye doctor should definitely be seen.

Symptoms of eyelid eczema

  • Pain, aching, redness and swelling of the eyelid.
  • Constant itching of the eyelid.
  • Watery eyes.
  • Redness inside the eye.
  • Difficulty opening the eyelid.
  • Sores on the eyelid.

Causes of eyelid eczema

  • Sunlight
  • Allergic causes
  • Eye diseases
  • Inflammation of the eyelid
  • Eye infection
  • A blow to the eye
  • Washing the face with soap containing chemicals
  • Use of eye creams containing chemicals and of make-up products applied around the eyes
  • Problems such as climatic conditions can cause eczema on the eyelid.

Suggested treatment for eyelid eczema

Under medical supervision, a herbal eye cream and a topical moisturiser should be used. Plenty of water should be drunk, and the diet should focus on fruit and vegetables. A seawater spray can be used. Corticosteroid eye drops can be used. Pine oil can be rubbed gently onto the eyelid. Evening primrose oil can be rubbed gently onto the eyelid. Plenty of probiotic supplements should be taken. A regular sleep pattern should be maintained.

Facial Eczema

Facial eczema is one of the most common complaints. As well as affecting health, it spoils many people's appearance, and so it has a negative effect on daily life. Facial eczema causes social problems, especially in children. For example, a child's classmates may make fun of them because of the problem, which affects the child psychologically. It is seen in adults as well as in children. It is generally associated with living in regions where the climate is dry. Facial eczema is very common in the east of our country (Turkey). This is because the main cause of eczema is dryness of the skin due to dry weather conditions. Dry skin is the main source of facial eczema. Wherever it occurs on the body, eczema is not a very dangerous disease. Its biggest problem is the unsightly appearance it creates. There is no definitive cure for eczema in adults, but a few small measures can be taken to stop the problem from getting worse.

Causes of facial eczema

  • The main causes of facial eczema are allergic.
  • Allergic eczema is seen in many people. Allergic cases can be reduced medically with simple treatments.
  • With facial eczema, never use treatments without consulting your doctor.
  • During this time, herbal remedies should not be used without medical supervision. Allergy-related eczema can be affected by these plants and get worse rather than better.
  • It may appear as a side effect of cosmetic products used.
  • If it is present in some family members, the likelihood of others having it increases; in other words, it occurs for genetic reasons.
  • In addition, people with eczema should strictly avoid seafood and dairy products.
  • Not following hygiene rules can be given as an example of a cause of eczema. It can result from very dusty environments and from not washing the face at least once a day.
  • People with facial eczema should use plenty of moisturiser. Dry skin is one of the main triggers of the disease.
  • Working in very dirty environments is among the causes.

Diagnosis and treatment of facial eczema

In children it is a disease that can be treated easily. When it has not progressed, it is a minor problem that can be resolved in a short time. In adults, the approach is different from that in children. Treating eczema in adults is quite difficult; because the chance of a cure falls to as low as three per cent, it cannot be definitively cured. In children, if it is genetic, treatment may not give a definitive result. Certain measures need to be taken when treating children; during this period they should be bathed frequently. For adults, washing the face will stop the condition from getting worse. There are many medicines and creams used in the medical treatment of facial eczema . Creams will be prescribed by your doctor, who will explain how often to use them. If the eczema started in childhood, on the face and surrounding area as well as on many other parts of the body, the disease usually loses its effect by adolescence. During this time, the patient can use certain herbal remedies on a doctor's advice to recover from the disease sooner. For herbal treatments to work, the person needs to pay attention to certain points; in other words, if they follow hygiene rules, the effects of the disease will lessen. During treatment, staying away from dusty, dirty and unclean environments both prevents the disease from spreading and is very important for the person's health.

Nickel Eczema

Nickel is a hard, shiny, white, silver-like metal. Compared with silver or gold, nickel is more durable and easier to work. For this reason it is frequently used in alloys with other metals, in metal jewellery and in the manufacture of many other objects. Nickel is the most common cause of the allergic skin rash called allergic contact dermatitis (allergic contact eczema). Because nickel is also used as a durable plating material in many metal products used in daily life, it is a significant problem for people with an allergic sensitivity.

Who gets nickel allergy?

Nickel sensitivity is common, affecting one in every ten people in the population, especially women.

Anyone can develop an allergy to nickel. Nickel allergy (sensitivity) typically starts between the ages of 10 and 20 in girls who begin wearing cheap metal (imitation) jewellery. In our country (Turkey), the tradition of having ears pierced at an early age is the main reason why nickel allergy is more common in women. The spread of the piercing fashion is also contributing to an increase in nickel sensitivity. People working in jobs involving contact with nickel can develop nickel allergy later in life as a result of repeated exposure. The risk of developing nickel allergy in people with atopic eczema is currently not found to differ from that in other people. However, in people with dry, flaky, cracked and damaged skin who are sensitive to nickel, even the slightest contact with anything containing nickel will easily trigger the skin rash of nickel allergy.

What causes nickel allergy?

Why do some people develop nickel allergy while others do not become sensitive to nickel? The answer to this question has not yet been fully explained. Nevertheless, nickel sensitivity is more common in people working in certain occupations: hairdressing, nursing and patient care, catering, and jobs involving contact with money and metals.

Nail Involvement

In psoriasis, nail involvement can be seen in one in every 2 patients. Nail involvement is more common during clinical flare-ups of psoriasis. It is more frequent in psoriasis patients with a family predisposition, and in them it starts at an earlier age.

Nail involvement in psoriasis is made worse by trauma. For this reason, the fingernails – especially those of the dominant hand – are more often involved. It is more common in people who work with their hands and in those with frequent exposure to chemicals. Nail involvement in psoriasis can improve over time. Fingernail involvement increases in summer due to UV exposure. Nail involvement is seen more frequently in psoriasis with joint involvement.

Dyshidrotic Eczema

Dyshidrotic eczema, usually seen on the hands and feet, appears on the palms and soles as well as along the sides of the fingers and even around the nails. Dyshidrotic eczema is not contagious. It begins with the formation of tiny fluid-filled blisters. Dyshidrotic eczema causes itching and the blisters may burst when scratched, but it clears on its own within a week or two as they dry out. When the blistered areas dry, they peel, and over time this appearance disappears. Because it shows symptoms similar to other skin diseases, it is quite difficult for doctors to make a definitive diagnosis of dyshidrotic eczema, so a doctor should be seen for early diagnosis. In addition, the affected skin is thicker than other skin, and the blisters do not burst with gentle scratching. Sometimes small blisters merge to form larger ones.

Causes of Dyshidrotic Eczema

There are many causes of dyshidrotic eczema, and in each person it arises for different reasons. In some people it is caused by detergents and bleach, while in others it is caused by flavoured fruit juices. In addition, caffeinated drinks such as tea and coffee, cocoa, nuts, chocolate and whole grains can bring it on. Likewise, alcohol can also cause dyshidrotic eczema. This type of eczema is not contagious; it is a hereditary disease.

Dyshidrotic eczema is more common in women than in men. Doctors think this may be due to allergic reactions and to being under high stress. If your feet and hands are constantly exposed to moisture or are in water, or if you are exposed to nickel, chromium and metal salts, eczema can develop.

Treatment of Dyshidrotic Eczema

As mentioned under the causes of dyshidrotic eczema, because it has no specific cause, there is no treatment that can be called a definitive cure. However, if you know what you are allergic to, it is wise to avoid it. Dyshidrotic eczema usually clears on its own within a week or two without any treatment. Because this type of eczema is a recurrent disease, it may come back after it has cleared. If you have pain from dyshidrotic eczema, it is advisable to consult a doctor and take medication.

You can apply wet compresses to relieve itching and pain. Take care not to burst the blisters, because bursting them can prolong treatment. Avoid getting the areas affected by dyshidrotic eczema too wet; in other words, do not wash the affected area too often. In addition, do not use products that will irritate your skin, such as scented creams, and avoid washing dishes by hand. Keep away from these until the dyshidrotic eczema has cleared.

Photoallergic Contact Dermatitis: A delayed-type (type 4) hypersensitivity reaction resulting from the interaction of an allergen with UV light. For it to occur, the person must have been sensitised to the agent. It is triggered by antiseptic soaps, cleansers, cosmetics, perfumes and topical medicines containing phenothiazines.

 

 

 

Non-Contact Dermatitis

Although contact dermatitis most often presents with an eczematous morphology, it can rarely present with non-eczematous pictures. These – urticarial (erythema multiforme-like), lichenoid, papular/follicular, bullous, dyshidrosiform, pustular, pigmented, purpuric, lymphomatoid and granulomatous contact dermatitis – may be associated with allergic contact dermatitis, irritant contact dermatitis or photocontact dermatitis.

 

Atopic Dermatitis

The word atopic means "different". Here it refers to a difference in the skin, and it is used to describe the hereditary type of allergic eczema. Some types of eczema, such as contact eczema, can arise from a single cause, while other types can result from a combination of many factors. Eczema in children may improve on its own over time, but there is no definitive cure for eczema in adults.

Eczema can be brought under control by avoiding the factors that trigger it. Eczema can be chronic (long-lasting) or acute, in the form of short-lived flare-ups, and in many patients eczema that improves in summer can reappear in winter and get worse.

Chronic eczema appears as an itchy rash. Scratching the eczema area leads to thickened skin that cracks easily. In acute eczema, the most common signs are fluid-filled blisters together with redness, swelling and itching of the skin. In eczema the body's defences against infection are weak, so inflammation easily develops from infections and fungal diseases.

Atopic eczema is an itchy inflammation of the skin. The inflammation is rarely caused by allergy or infection, and it is not contagious. It is the most common type of eczema in children, and is also called childhood eczema. The course of the disease is very variable, but it can be chronic. Eczema is a difficult disease for children, families and those treating it alike, and its treatment can take a long time.

Atopic eczema can appear from early infancy through to the childhood years. In many children the complaints lessen towards school age, and in some they may disappear completely. However, eczema can reappear later, in the teenage years or in adulthood. Some people have eczema throughout their lives.

Atopy means that a child has an inborn, hereditary predisposition to atopic diseases. Atopic diseases include atopic eczema, asthma, (seasonal) pollen allergy, and year-round allergy affecting the eyes and nose. People with atopic eczema have a strong tendency to develop hand eczema. This can arise entirely on its own, but frequent hand washing and contact with skin irritants can be triggers.

Nummular dermatitis

A dermatosis characterised by coin-shaped, round or oval, well-defined eczematous plaques with excoriated papules and vesicles. It is usually seen in men. It appears between the ages of 15-25 and 55-65 and is often localised to the limbs.

Infection theory: Colonisation of the lesions by Staphylococcus aureus is increased, and there is a hypersensitivity reaction to the bacterium itself or to the infection. It can be triggered by physical and chemical trauma, emotional stress, and toxic or allergic causes. The lesions are sharply demarcated and coin-shaped. Papules, vesicles and erythema are seen. They show rough symmetry on the legs and arms. There may be itching and burning. Dry skin makes the lesions flare.

Differential diagnosis: Tinea corporis, contact dermatitis, atopic dermatitis, pityriasis rosea, psoriasis.

Treatment: Systemic antibiotics (if necessary), topical steroids and ointments containing a steroid and an antibiotic may be given.

Asteatotic Eczema

A type of eczema occurring as skin dryness caused by factors such as ageing, atopy, dry weather conditions, excessive exposure to water, detergents and poor diet. Men are affected more often than women.

Clinical profile:

The skin is dry and rough with fine scaling. In later stages, superficial cracks and fissures appear in the keratin layer of the skin, accompanied by erythema, oozing and crusting. Mild xerosis is asymptomatic, but itching and burning may be present in more marked lesions.

Distribution:

The legs are generally affected, but these lesions can also occur on the arms, hips and trunk.

Diagnosis:

Diagnosis depends on the patient's history, the clinical profile and the exclusion of other diseases.

Differential diagnosis:

Stasis dermatitis, atopic dermatitis, allergic contact dermatitis, nummular eczema and excessive itching should be distinguished from asteatotic eczema.

Dyshidrosis

A recurrent dermatosis with itchy vesicles that do not burst easily, located on the hands and feet, particularly on the sides of the fingers. When it develops in response to a fungal infection elsewhere on the body, it is called an id reaction. It is thought to result from emotional stress or sensitivity to substances such as nickel, cobalt and chromium. The lesions appear suddenly as deep-seated, tense vesicles 1-2 mm in diameter on a non-erythematous background. Erosions, fissures and scales form where the vesicles have burst; it is self-limiting and clears in 2-3 weeks. There is intense itching.

Differential diagnosis: Tinea pedis, tinea manuum, pustular psoriasis, allergic/irritant contact dermatitis.

Treatment: Topical steroids, wet dressings with potassium permanganate, systemic antihistamines, avoidance of irritants, a low-nickel diet.

Chronic Eczema or Lichen Simplex Chronicus

This type of eczema occurs when the patient constantly scratches or rubs a single spot. People with a compulsion to scratch constantly will see thickened and discoloured skin in the areas concerned.

This type of eczema is usually seen on the back of the neck, the groin, the wrists and the ankles.

Constantly scraping the skin can also cause a disease similar to this type of eczema called prurigo nodularis. In this disease, just as in lichen simplex chronicus, small red bumps form on the skin.

Stasis (Impaired Circulation) Eczema

People who develop stasis eczema are generally those with enlarged veins and poor circulation, or those exposed to conditions that weaken circulation. It usually occurs on the ankles, calves and feet. The legs may swell, and it can cause red bumps, inflammation, darkening due to pigment changes and sometimes pain in the ankles.

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