Abstract:

A 46-year-old male resident living in Shanghai was presented to Department of General Practice, Outpatient Department of Shanghai University of Traditional Chinese Medicine on April 2024, with complaints of itching all over the body for 14 days. He had a history of night medical chaperones in a hospital on March 2024. Skin tunnel staining of skin lesions on the patient’s wrist palmar crease with gentian violet showed “thread-like” staining, and dermatoscopy displayed a typical “jet with contrail sign”, with mites’ mouth and two pairs of forefoot. The case was therefore definitively diagnosed as scabies, and given treatment with 20% sulphur ointment twice a day for successive one month. Then, the itching symptoms disappeared and dermatoscopy did not detect typical skin lesions.

Key words: Scabies, Dermatoscope, Skin tunnel staining, Mite separation, Sulfur ointment, Benzyl benzoate