The exact cause of angioedema is often unknown. The following may increase your risk or trigger symptoms:

(1) Allergic reactions to foods, insect stings, or latex, (2) Medicines, such as ACE inhibitors, NSAIDs, and aspirin, (3) Cold, heat, pressure, trauma, or emotional stress, (4) A medical condition, such as autoimmune thyroid disease, lupus, or cancer, (5) A family history of angioedema…