JONATHAN T. WILDE, M.A., M.B., M.R.C.P.; ARCHIBALD G. PRENTICE, M.B., M.R.C.P., M.R.C.Path.
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To the editor: We report the case of a 17-year-old woman from the United States who, over a 3-day period after arrival in the United Kingdom, noticed worsening of bruising on her neck, trunk, and limbs. She also developed spontaneous gum bleeding and prolonged menstrual blood loss.
She had been taking Azo Gantanol (sulfamethoxazole-phenazopyridine; Hoffmann LaRoche, Inc., Nutley, New Jersey), two tablets twice daily, over the previous 2 weeks for treatment of a urinary tract infection. She was otherwise well and was taking no other medication. On examination she had widespread skin petechiae and ecchymoses and gum bleeding. There was
WILDE JT, PRENTICE AG. Sulfamethoxazole-Phenazopyridine and Thrombocytopenia. Ann Intern Med. ;104:128–129. doi: 10.7326/0003-4819-104-1-128_3
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Published: Ann Intern Med. 1986;104(1):128-129.
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