8fb70e90_Transfusion_Reaction__Pathophysiology
[Reaction] Allergic [Symptom Description] Symptoms include urticarial rash, hives, pruritis and hypotension [Pathophysiology] 
Seen in approximately 1% of recipients and caused by foreign plasma proteins. On rare occasions they may be associated with laryngeal oedema and bronchospasm.
Transfusion Reaction
Pathophysiology