J Drugs Dermatol
-
Levamisole is a veterinary anti-helminthic used to treat several autoimmune conditions but also commonly utilized as an additive in cocaine distribution. Toxicity resulting in agranulocytosis and cutaneous necrosis in association with cocaine use is an infrequently described phenomenon of an emerging problem. ⋯ The following case describes a 54-year-old male who developed fever, agranulocytosis, p-ANCA autoantibodies and extensive skin necrosis following heavy intranasal cocaine use. Necrosis of greater than 50% of the patient's total body surface area resulted and was followed by thorough wound debridement.
-
The Koebner phenomenon refers to the development of lesions in response to injury of previously uninvolved skin. It occurs in psoriasis and a number of other inflammatory diseases. We present a patient who developed a Koebner reaction at the site of a tattoo. Treatment with ustekinumab resulted in striking clearance of the psoriasis changes at the tattoo site.