Pictures of hives, also known as urticaria, can help you to identify these raised, red, itchy bumps or welts. Causes include stress, infections, food or latex allergies, medications, and environmental ...

Pressure urticaria is a type of chronic urticaria that causes recurring hives from pressure applied to your skin. It may be treated with a combination of trigger avoidance and medications. Better ...

Up to 30% of people with chronic hives (also known as chronic urticaria) have an underlying autoimmune disease that affects the thyroid gland in the neck. Chronic hives are especially common in people ...

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

The reality of living with chronic hives -- which by definition last for 6 weeks or longer and have no apparent specific trigger -- can be very challenging. About half of people with "chronic ...

Carrie Madormo, RN, MPH, is a health writer. She has over a decade of experience as a registered nurse, practicing in a variety of fields, such as pediatrics, oncology, chronic pain, and public health ...

Some people may experience hives, also known as urticaria, just before or during their period. This is due to hormonal allergies from an increase in progesterone levels during menstruation. This is ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. Approximately half of patients do not respond to H1 ...