If your hives come and go but never really leave, CSU could be the hidden culprit. Learn why it's often missed-and what can ...

"Chronic hives are treated with antihistamines, usually second-generation antihistamines, which are less sedating and last ...

You probably know urticaria -- one of the most common skin conditions -- by its non-medical name, hives. According to the American College of Allergy, Asthma and Immunology, hives affect about 20% ...

Now, almost 70 years later, the cause of urticaria -- characterized by the sudden eruption of itchy raised wheals on the skin, with or without angioedema -- remains unknown in 50% of acute cases ...

It is not always possible to prevent hives from developing on the arms and legs, as around 50% of people with chronic urticaria never find out what causes their hives to appear. However, if there ...

Hives (urticaria) can best be described as itchy red bumps on the skin. They can occur anywhere on the body and usually they can be related to one of three major causes. Hives can be a ...

People may associate a bullseye-shaped rash with Lyme disease. However, a number of health conditions may cause this symptom. Learn more here.

Stress-induced rashes typically cause a flare-up of hives — persistent, raised itchy bumps — and are common. For those who experience other skin conditions, such as eczema, rosacea and ...

Both bug bites and hives can cause red, itchy bumps on your skin. While it can be difficult to tell them apart, learning key features and characteristics of each can help. Hives and bug bites are ...

Stress can cause hives, or a stress rash. While allergies are the main cause of hives, some research has found that stress can also trigger this skin condition where the body releases histamines.

COVID-19 can cause hives during the day or night. Learn more about hives that develop only at night, including other possible causes, like allergies.