Nummular eczema

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1. Overview

Nummular eczematous dermatitis (nummular eczema or nummular dermatitis) is the name of a rash round as a coin, which appears as rashes covered with scabs.

As time passes, the lesions become clean in the center and scaly, similar to psoriasis. The condition is chronic, with periods in which events are emphasized or subdued.


1. Overview
2. Causes
3. Recommendations for improvement of nummular eczema
4. Symptoms
5. Investigation and diagnosis

2. Causes

The cause of eczema is unknown, although occasionally can be associated with a drug allergy. Nummular eczema is more common in winter and is often associated with dry skin. Extreme temperatures and certain types of allergies increase nummular eczema symptoms.

This type of eczema should not be confused with atopic dermatitis, a more common encountered skin problem, which may be an allergy. Unfortunately, there is no cure for nummular eczema. However, there are effective ways to control it.

Among them prescription issued ointments containing cortisone would be the best alternative. If a person uses the drug for a long period of time or on large areas of the body, he needs regular skin exams.

Creams that contain a significant amount of cortisone will be applied locally, by massaging the skin. Keep in mind that you should use a thin layer and should not be applied on face, armpits, groin or rectal area. In most cases it is sufficient to apply the ointment once a day.

If scaly nummular eczema does not improve by doing this, we recommend adding coal tar in cream containing cortisone. Considering that areas that manifest nummular eczema are prone to infections (especially staphylococcal), it is recommended the use of oral antibiotics for a week or two.

Persistent itching seizures can be controlled with treatment with ultraviolet light, is the dermatologist’s office.

3. Recommendations for improvement of nummular eczema

In general, the skin needs to be lubricated by applying body oil after shower. Grease has the same beneficial effect, if is not too fat. Do not bathe or shower more than once a day and will avoid using hot water. For drying, do not rub your skin with a towel, but pat gently until the water is removed.

It is advisable to use soap only for the face, armpits, genitals and legs. People who suffer from nummular eczema often have dry skin and even slightly irritated.

Avoid rough clothing; it is recommended the clothing with a composite of 100% cotton. Do not use fabric freshening laundry and laundry detergent is unscented. To control nummular eczema, it is important that all these precautions become routine.

4. Symptoms

The main symptoms of nummular eczema are:
- Skin lesions that have coins’ form localized on the arms and legs, sometimes spread on trunk too;
- Presence of crusts and scales;
- Itch;
- Redness and local swelling of the skin.

5. Investigation and diagnosis

The doctor will diagnose the condition based on the patient’s skin examination and obtained responses from patient to questions about family medical history. To exclude similar conditions may require biopsy.



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