Pentad of Thrombotic Thrombocytopenic Purpura (TTP):

shared by Shadi Haddad

Mnemonic: "The Father Must Never Know"

T: Thrombocytopenia, bruising 

F: Fever
M: Microangiopathic Hemolytic Anemia
N: Neurologic Symptoms (Headache, stroke, confusion)
K: Kidney failure.