Progressive macular hypomelanosis (PMH) is a condition of unknown etiology characterized by asymptomatic, hypopigmented macules located predominantly on the trunk. We recorded 12 adolescents with PMH over a 6-month period. Ten were female, and the mean age was 16.6 years. The average time from the patients first noticing pigment change to diagnosis was 15 months. PMH is probably an underdiagnosed condition.
PCR should be routinely used in patients with cutaneous lesions compatible with CL and furthermore, the combination of two PCR techniques is advisable. The selection of these PCRs will be influenced by the epidemiological scenario: In areas where L. infantum is endemic, the use of the PCR-ELISA joint with JW13/JW14-PCR seems an appropriate choice, whereas in areas such as Morocco, Lmj4/Uni21 and ITS-1 provide satisfactory results.
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