|LETTER TO EDITOR
|Year : 2005 | Volume
| Issue : 6 | Page : 428-429
Drug rash due to levamisole
Ramji Gupta, Sarthak Gupta
Vidyasagar Institute of Mental Health And Neurosciences, Nehru Nagar, New Delhi, India
47-C, Pocket B, Siddharth Extension, New Delhi - 110014
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Gupta R, Gupta S. Drug rash due to levamisole. Indian J Dermatol Venereol Leprol 2005;71:428-9
Levamisole, a commonly used anti-helminthic, has been found to have microfilaricidal, immunostimulant and immunomodulator activities. Its side effects include nausea and vomiting, metallic taste, diarrhea, malaise, insomnia, sensory stimulation, hyperallergic state, dizziness, headache, blurred vision, fatigue and fever. Prolonged use of this drug may cause agranulocytosis,, cutaneous necrosis, vasculitis,, ataxia, purpura involving the ear, thrombocytopenia and psychosis. Hypersensitivity due to levamisole is rare. Recently, we reported a case of fever due to levamisole. Here we report a patient of vitiligo who developed repeated episodes of fever along with itching and redness of the palms, soles and legs on intake of levamisole. On rechallenge with levamisole he developed the same symptoms within 5 hours.
A 33-year-old man presented with progressive depigmentation of the skin over the abdomen, back, lower limbs and arm since the past 6 months. The patches appeared initially on the abdomen followed by the back and were progressive. He was diagnosed as a case of vitiligo and started on oral betamethasone (5 mg) and levamisole (150 mg) tablets, once daily on two consecutive days every week. After three months, topical fluocinolone acetonide (0.01%) cream was added to the existing therapy. After 8 months, on one occasion, 12 hours following intake of the oral drugs, he developed fever (102ºF) with chills and rigor, followed by itching and redness of the skin over the palms, soles and both legs. Sore throat or burning micturition was not associated. He stopped the drugs and sought advice of a local physician. With treatment he became asymptomatic within 8 days. He restarted betamethasone and levamisole after 1 month and developed similar symptoms within 4-5 hours of intake of the drugs. This episode also needed medical help for 5-6 days. He stopped taking the oral medications and continued with the application of the topical steroid.
To confirm the diagnosis of fever and drug rash due to levamisole, rechallenge was done with oral levamisole (150 mg) under medical supervision with the patient's consent. After 5 hours, he developed fever (102°F) followed by itching, redness and swelling of the lips, palms and soles. The patient was advised oral betamethasone 5 mg 12-hourly and his lesions resolved completely within 24 hours.
Repeated episodes of fever along with redness and itching of palms and soles within 4-12 hours of intake of levamisole points towards the association of the reaction with this drug. Reappearance of similar symptoms during rechallenge with the drug further confirms this association. A similar case was reported by Secher et al.  Their patient, who had rheumatoid arthritis and was being treated with levamisole, developed fever with severely itchy skin lesions.
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