“…Lesions of SD occur primarily on the eyebrows, nasolabial folds, cheeks, and sternal and interscapular region (337). In the normal population, the incidence of SD is around 1 to 3% (155,352), but in patients who are human immunodeficiency virus positive or have AIDS-related complex or AIDS, the incidence is much higher, ranging from 30 to 83% (92,119,141,275,408), although the incidence of all opportunistic infections has decreased since the widespread use of highly active antiretroviral therapy (323). SD also has a higher than expected incidence in patients with PV (134), Parkinson's disease (55), spinal injuries (471), or depression (266) or those receiving PUVA treatment (434).…”