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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All are TRUE about paroxysmal cold hemoglobinuria (PCH), EXCEPT:
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The correct answer is  Paroxysmal cold hemoglobinuria is a rare form, occurs mostly in children, triggered by viral infection. Donath Landsteiner antibody binds to red cells only at low temperature, but lysis takes place when the temperature is shifted to 37 celcius. Ref: Harrison's principles of internal medicine, 18th edition; Page 882