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Idiopathic cold hemagglutinin syndrome
Idiopathic cold hemagglutinin syndrome (CHAD) is a disease of humans.
Additional recommended knowledge
IgM binds to red blood cell surface antigens in the cold. This can occur in a susceptible individual as blood passes through cold extremities in cold weather. Complement is also fixed onto the RBC surface. Extravasular and intravascular haemolysis can occur. When blood returns the warm central circulation IgM can become detached from the RBCs leaving complement system components fixed on the RBC surface. This can influence Coombs test results. Hemoglobinuria can occur.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Idiopathic_cold_hemagglutinin_syndrome". A list of authors is available in Wikipedia.|