A 40 year old woman of an Arab village was sent to me by the local physician for treatment of tinea capitis, a disease frequent in Palestine.
Examining her scalp, I saw an isolated plaque with incomplete alopecia, 3 by 4 cm. in extent, with irregular, ill defined limits. The area was covered with a mass of coarse adherent scales, elevated above the surface. There were no signs of inflammation. Hairs of various lengths protruded above the white mass. They had not lost their pigmentation. The shortest of them showed resistance to the epilating forceps while they were being removed for examination.
Microscopic examination of the hairs and scales after they had been soaked in 30 per cent solution of potassium hydroxide did not reveal mycelium or spores. A repeated microscopic examination after local applications of 5 per cent solution of dextrose during twenty-four hours showed
GILL S. ALOPECIA CIRCUMSCRIPTA DUE TO VITAMIN A DEFICIENCY: REPORT OF A CASE. Arch Derm Syphilol. 1945;51(2):110–111. doi:10.1001/archderm.1945.01510200034005
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