It appears to run in families and may be associated with stress, fatigue, weather extremes,
oily skin, infrequent shampoos or
skin cleaning, skin disorders or obesity. The diagnosis is based on the appearance and location of the skin lesions. Over-the-counter dandruff or medicated shampoos my help with the flaking . In severe cases, shampoos or lotions containing selenium, ketoconazole, or corticosteroids may be prescribed . This condition is chronic and can be controlled with treatment.