Hives are itchy red or white bumps that often stem from an allergic reaction. Some rashes are contagious, but hives are not spread from person to person. Corticosteroids and biologics can treat both ...

— meaning the cause is unknown — or it could be prompted by a variety of factors that combine and make hives linger. Unlike acute hives, a condition that lasts for short periods and tends to be ...

Exercise-induced urticaria (EIU) is a rare condition in which a person experiences hives triggered by exercise. It can make physical activity more difficult, but some tips can help you stay active.

If you've ever had an allergic reaction that includes hives-a rash with itchy, raised bumps or welts-then you know how uncomfortable they are. In addition to the intense, sometimes uncontrollable ...

Urticarial vasculitis is an autoimmune condition that causes itchy or painful hives. Some people may also develop inflammation in other organs, such as the kidneys or lungs. Vasculitis is a group of ...

What Is Rhapsido, and Why Does It Matter? Rhapsido (remibrutinib) is a new oral medicine approved to treat adults with chronic spontaneous urticaria (CSU). CSU is a long-term skin condition that ...