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This disorder is very common among the older population. Seborrhoeic dermatitis (“cradle cap” in infants) is a condition sometimes classified as a form of eczema that is closely related to dandruff.These include dryness and recurring skin rashes that are portrayed by one or more of these symptoms: redness, skin oedema (swelling), itching and dryness, crusting, flaking, blistering, cracking, oozing, or bleeding.Areas of temporary skin discoloration may appear and are sometimes due to healed injuries.Scratching a healing lesion may result in scarring and may enlarge the rash.The classifications below are described by incidence frequency.It worsens in dry winter weather, the limbs and trunk are most often affected.The itchy, tender skin resembles a dry, cracked river bed.About three quarters of cases of contact eczema are of the irritant type, which is the most common occupational skin disease.
Atopic eczema (aka infantile e., flexural e., atopic dermatitis) is an allergic disease which may have a hereditary component and often runs in families whose members also have asthma. An itchy rash is particularly noticeable on the head and scalp, the neck, the inside of the elbows, behind the knees and on the buttocks.Atopic eczema is often confused with irritant contact dermatitis. There are two types of contact dermatitis: allergic (resulting from a delayed reaction to some allergen, such as poison ivy or nickel), and irritant (resulting from direct reaction to a detergent, such as sodium lauryl sulphate, for example).Some substances act both as allergen and irritant (wet cement, for example).Other substances cause a problem after sunlight exposure, bringing on phototoxic dermatitis.Eczema or atopic dermatitis is a skin condition due to inflammation of the epidermis, the outer layer of the skin.
The term eczema is broadly applied to a range of persistent skin disorders.