Medical Services

An Allergic Transfusion Reaction is a relatively common complication of blood transfusion caused by an immune response to plasma proteins or other allergens present in the donated blood component. It typically develops during the transfusion or within a short period afterward. Symptoms may include itching, urticaria, flushing, skin rash, and mild swelling. In more severe cases, patients can develop breathing difficulty, wheezing, low blood pressure, or anaphylaxis, which requires immediate emergency treatment.

When an allergic reaction is suspected, the transfusion should be stopped and the patient assessed promptly. Vital signs should be monitored, and the clinical team must distinguish an allergic reaction from other potentially serious transfusion reactions. Mild symptoms are commonly managed with antihistamines according to clinical guidance. Severe reactions, particularly anaphylaxis, require urgent treatment with appropriate emergency medications and supportive care.

Patients who experience recurrent allergic transfusion reactions may require additional preventive measures. These can include carefully selected blood components, washed cellular products, or other modifications based on the underlying cause and clinical history.

Most allergic transfusion reactions are mild and resolve without complications. However, prompt recognition is important because severe reactions can progress rapidly. Appropriate investigation and preventive strategies can reduce the risk of recurrence during future transfusions.