hemoclastic crisis
noun
he·mo·clas·tic crisis
variants:
or chiefly British haemoclastic crisis \ ˌhē-mə-ˌklas-tik- 
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Medical Definition of hemoclastic crisis
: an acute transitory alteration of the blood that sometimes accompanies anaphylactic shock and is marked by intense leukopenia with relative lymphocytosis, alteration in blood coagulability, and fall in blood pressure