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, […]

To lessen the side effects of antihistamines and further reduce allergy symptoms, some allergy medicines combine an antihistamine with a decongestant, such as pseudoephedrine or phenylephrine. The decongestant helps alleviate allergy symptoms by shrinking the blood vessels to relieve nasal and sinus pressure. Antihistamines combined with a decongestant are often labelled with a “D” ending, […]

Angioedema is an area of swelling of the lower layer of skin and tissue just under the skin or mucous membranes. The swelling may occur in the face, tongue, larynx, abdomen, or arms and legs. Often it is associated with hives, which are swelling within the upper skin. Onset is typically over minutes to hours. […]