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Pediculosis pubis and dermoscopy

Pediculosis pubis (PP) is an infestation with pubic lice Phthirus pubis. There are no rational differences in incidence and the infestation is common Phthirus pubis habituates regions that are rich in appocrine glands, so predilection sites are pubic area, axillae and eyelashes. Scalp hair, beard, moustache, and in hirsute individuals the short hairs of the thighs, trunk and perianal area may be involved Eyelashes and periphery of the scalp occur mainly in children, probably as a result of contact with an infected parent Typical clinical findings are blue to grey macules (sky-blue spots), maculae coerulae, sized from several millimetres to several centimetres (1). Excoriations are not commonly found. Secondary infection due to excoriations can lead to local lymphadenitis and fever. The diagnosis is confirmed by microscopic examination of the plucked hair to identify the nits with vital nymphs and hatched empty cases Lice are difficult but possible to see with close inspection or magnification. Additionally, dermoscopy allows to differentiate nits with vital nymphs from empty cases and to identify pubic lice Dermoscopy with a noncontact and contact handheld dermoscope (DermLite Platinum and DermLite II PRO-HR, 3Gen, LLC) was done We present a 33-year old male patient with symptoms of moderate pubic itch lasting for two weeks. Treatment with lindane 1% shampoo was done in two cycles during 3 week along with nit removal. The response to treatment was well. At the control visit the patient was with no symptoms, and no nits or lice were observed. Dermoscopy is a non-invasive technique used in the evaluation if pigmented skin and non-pigmented skin lesions, particularly for the early detections of melanoma the dermoscopy with noncontact and contact handheld dermoscope enabled us to establish a rapid diagnosis visualising unhatched and hatched nits and lice, and also treatment follow-up. Therefore in vivo dermoscopy is safe, reliable and simple method in diagnosing and treatment monitoring of PP that can be used in every day routine.

pediculosis pubis; dermoscopy; treatment

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