Dr. Steven Greene’s dermatology career has spanned more than three decades. Previously, Dr. Steven Greene held the position of staff dermatologist at the Seattle-based Group Health Cooperative.

Psoriasis is one of many debilitating skin diseases. While there are multiple forms of the condition, the most common is psoriasis vulgaris, or plaque psoriasis. This form affects some 80% of those who have psoriasis. Patients with plaque psoriasis exhibit reddish skin lesions that develop white scales.

While as much as 10 percent of the population has a genetic predisposition to various forms of psoriasis, only two to three percent eventually get the condition. It is believed that one or more “triggers” must occur to stimulate an initial outbreak. These triggers include skin injury, severe stress, and several known medications, namely lithium, Inderal, and quinidine.

More extensive information about the forms, causes, and treatments of psoriasis is available through the National Psoriasis Foundation’s website at http://www.psoriasis.org.