Dermatitis – Symptoms and causes – Mayo Clinic

Overview

Dermatitis is a general term that describes a common skin irritation. It has many causes and forms and usually involves itchy, dry skin or a rash. Or it might cause the skin to blister, ooze, crust or flake off. Three common types of this condition are atopic dermatitis (eczema), seborrheic dermatitis and contact dermatitis.

Dermatitis isn't contagious, but it can make you feel uncomfortable and self-conscious. Moisturizing regularly helps control the symptoms. Treatment may also include medicated ointments, creams and shampoos.

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Atopic dermatitis can cause thickened dry skin and a rash.

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Atopic dermatitis can cause small, red bumps, which can be very itchy. Atopic dermatitis most often occurs where your skin flexes inside the elbows, behind the knees and in front of the neck.

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Seborrheic dermatitis causes a rash with yellowish and somewhat "oily" scales. In addition to the scalp, seborrheic dermatitis can occur on the sides of the nose, in and between the eyebrows, and in other oil-rich areas.

Each type of dermatitis tends to occur on a different part of your body. Signs and symptoms may include:

See your doctor if:

A common cause of dermatitis is contact with something that irritates your skin or triggers an allergic reaction for example, poison ivy, perfume, lotion and jewelry containing nickel. Other causes of dermatitis include dry skin, a viral infection, bacteria, stress, genetic makeup and a problem with the immune system.

Common risk factors for dermatitis include:

Scratching the itchy rash associated with dermatitis can cause open sores, which may become infected. These skin infections can spread and may very rarely become life-threatening.

In people with brown and Black skin, dermatitis might cause the affected area to darken or lighten (post-inflammatory hyperpigmentation or hypopigmentation). It might take months or years to return to your usual skin color.

Wear protective clothing if you are doing a task that involves irritants or caustic chemicals.

Avoid dry skin by adopting these habits when bathing:

Dermatitis care at Mayo Clinic

Sept. 22, 2021

Originally posted here:
Dermatitis - Symptoms and causes - Mayo Clinic