Arsenical pigmentation of the skin

Black and white photograph showing pigmentation on the skin of the neck due to arsenic medicinally administered for chorea. 15 minims of liquor arsenicalis had been given three times a day for a period of six weeks. The lighter patches are due to a desquamation of the epidermis. There was no evidence of neuritis. From the Out-patient Department of the Hospital for Sick Children, Great Ormond Street.