In a healthy body, mast cells (the “lookout” cells of the immune system) only release histamine when they detect a foreign ...

Angioedema is deep tissue swelling that may occur due to various health conditions. Treating angioedema swelling depends on the cause. Angioedema may be acute or chronic, and acute symptoms may last ...

(BPT) – If you’ve had hives, you know how challenging they can be. But you may not know that there is more than one type of hives, or urticaria, and that treatments are available. A brief episode of ...

Hives, or urticaria, can occur for many reasons, such as exposure to an allergen or a physical trigger, like pressure from tight clothing. It may also indicate an infection or another underlying ...

Allergies can cause hives, and foods like nuts, milk, and eggs are common triggers. Environmental factors like sunlight, water, and heat can cause hives in some people. Stress can make hives worse, ...

Chronic urticaria (CU) is a dermatological condition characterized by recurrent wheals (hives), angioedema (deep tissue swelling), or both, persisting for over 6 weeks. 1 Unlike acute urticaria, which ...