Ann Dermatol Vener
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The Prader-Labhart-Willi syndrome was first described in 1956. Prader-Labhart-Willi syndrome is the most common genetic form of human obesity and the incidence of Prader-Labhart-Willi syndrome has been estimated to 1 in 10,000 or 25,000 live births. Skin-picking was frequently reported in Prader-Labhart-Willi syndrome and two patients who displayed repetitive skin picking are described. ⋯ Skin-picking appears to occur in the great majority of patients with Prader-Labhart-Willi syndrome and constitutes a minor criteria of diagnosis. Hypopigmentation in Prader-Labhart-Willi syndrome appears to be as common as previously features. Significant differences in hair color, sun sensitivity and complexion were found between those patients with chromosome 15 deletion and those with normal chromosome. Association between obesity (onset before 6 years) and skin picking constitute a sign for diagnosis of Prader-Labhart-Willi syndrome.
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Despite prominent warnings, pregnancies continue to be reported in women exposed to isotretinoin. ⋯ Insufficient compliance with warnings is the main reason for pregnancies in women receiving isotretinoin therapy. A pregnancy prevention program is needed before prescription to ensure comprehension and to obtain informed consent of patients.