Seborrheic dermatitis Causes

Seborrheic dermatitis
Causes

The etiology of seborrheic dermatitis remains unknown, although many factors (genetic, hormonal, environmental, etc.) are involved.


Pityrosporum ovale (a species of fungus) has been implicated in this disease. Seborrheic dermatitis is believed to be the result of an inflammatory response against this fungus, but this has not been demonstrated.


P. ovale is present at all, but the causes of seborrheic dermatitis in some people just are not known. The level of colonization of affected skin with this body is lower than that of healthy skin. However, the fact that seborrheic dermatitis responds to antifungal drugs suggests that the fungus is involved in this skin condition.
Genetic and environmental factors, and comorbid diseases increase the risk of developing seborrheic dermatitis.
Seborrheic dermatitis
Causes
Although seborrheic dermatitis affects only 3% of the general population, the incidence in people with HIV is 85%. People with central nervous system disorders (Parkinson's disease, cranial nerve paralysis, etc..) seem to be prone to seborrheic dermatitis or are refractory to treatment.