Seborrheic dermatitis is a chronic skin disease which is accompanied by redness, continuous dandruff and sometimes even mild itching. The cause of seborrheic dermatitis is not known, but experts believe that the disease is closely connected to increased production of sebum and Pityrosporum ovale (known under the new name Malessezia furfur). The disease frequently occurs at individuals who have genetic predisposition. Additionally, immunological disorders have an important role in disease development, as the symptoms worsen if the patients are under stress or increased load. Dry and cold weather, consuming alcohol and salty food may also have negative effects on the disease. Seborrheic dermatitis can occur during puberty as a result of increased synthesis of androgen and rapid production of sebum. The disease has the strongest manifestations at middle aged individuals. Approximately five percent of the population, mainly women, suffers from this disease. It can also occur at newborns, but the symptoms usually disappear after several months.

Seborrheic dermatitis is manifested on the hairy part of the scalp in the form of clearly limited pink-yellowish areas covered in sebo-squamous scales which are very thick and hard to remove. The disease can affect the forehead, neck and areas behind ears. Seborrheic dermatitis can also affect eyelid edges (seborrheic blepharitis) which are reddish and covered in squamous skin. This condition often results in the loss of eyelashes. Bacterial superinfection may occur in complex cases in the form of expressed redness of the skin, intensive itching and unpleasant smell. Mild form of the disease is manifested in the form of dandruff which does not cause redness. Moderate exposure to the sun is often helpful, so the symptoms withdraw during the summer months.

 

 

seboroicni dermatitis

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