Seborrheic dermatitis is a chronic superficial inflammation of the skin, rich in sebaceous glands (the scalp, eyebrows, eyelashes, naso-cheek folds, ears, bovine spaces, breasts, large folds of the skin).
The term neurodermatitis (syn: neurodermatitis) introduced Brocq in 1891 to refer to skin diseases in which skin changes develop as a result of scratching caused by primal itching.
Atopic dermatitis - acute, subacute or chronic recurrent inflammation of the epidermis and dermis, characterized by pronounced itching, has a certain age dynamics.
Periodic dermatitis develops mainly in young women. Eruptions are located around the mouth, rarely - in the eyelids, on the cheeks in the form of erythematous spots, flat cone-shaped papules or papulo- vesicles and papulo- pustules. The rashes are covered with crusts. Often they are in groups. A characteristic feature is the presence around the mouth of a narrow band, free from rashes.
Simple (contact) dermatitis is characterized by the onset of the lesion solely at the site of exposure to the irritating factor, the lack of sensitization and the tendency to disseminate and spread around the periphery of the focus.
