Although it is generally believed that 10% to 15% of the adult population suffers from chronic insomnia, and an additional 25% to 35% have transient or occasional insomnia, prevalence estimates vary because of inconsistent definitions and diagnostic criteria.
What is Seborrheic Dermatitis? Considered a chronic form of eczema, seborrheic dermatitis appears on the body where there are a lot of oil-producing (sebaceous) glands like the upper back, nose and scalp. The exact cause of seborrheic dermatitis is unknown, although genes and hormones play a role.
Seborrheic (seb-oh-REE-ick) dermatitis may be the most common skin condition to occur at the same time as rosacea. Although the two disorders are unrelated, a recent clinical study found that 26 percent of patients with rosacea also had facial seborrheic dermatitis and 28 percent had seborrheic dermatitis of the scalp.eborrheic (seb-oh-REE-ick) dermatitis may be the most common skin condition to occur at the same time as rosacea. Although the two disorders are unrelated, a recent clinical study found that 26 percent of patients with rosacea also had facial seborrheic dermatitis and 28 percent had seborrheic dermatitis of the scalp.