<unk>  is an autoimmune<unk>  characterized by the presence of high concentrations of circulating antibodies directed against red blood cells. It is a form of autoimmune hemolytic anemia, specifically one in which antibodies only bind red blood cells at low temperatures, typically 28-31°C.
Cold agglutinin disease
MERRF syndrome
Serum sickness
IMAGE syndrome
Hennekam syndrome
Henoch-Schönlein purpura
Hemolytic-uremic syndrome
Woodhouse-Sakati syndrome