Why are we so lazy? Keratinization, absence of granular layer, and depositation of antibodies and complement components in the stratum corneum. Most notable is the hyperproliferation of keratinocytes in the epidermis. These keratinocytes exhibit an increased mitotic rate and have ten times the turnover rate of normal keratinocytes. There is also an infiltration of CD4+ T lymphocytes, monocytes and neutrophils into the epidermis. Recently there has been much debate over whether psoriasis is mediated by an autoimmune process. The disease affects roughly two percent of the population in the United States. It has the greatest prevalence among Scandinavians and Northern Europeans, where it affects three percent of the population, and the least prevalence among North American Indians, with just half a percent being affected. Psoriasis seems to affect both males and females equally. The....

Number Of Pages: 8

Number Of Words: 1961

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