Medically reviewed by Daniel More, MD Key Takeaways Hives can cause red, itchy bumps or welts on the skin.Hives might be ...

If you've ever self-diagnosed your inflamed, itchy scalp with eczema just to have your dermatologist tell you it's actually psoriasis, you're not alone. The two conditions are extremely similar in ...

Hives are one of those things that you hear about so often that it feels like you should know what they are, how to spot them and how to treat them. But the truth is that many of us don’t really know ...

PALO ALTO, Calif. -- Hives and rashes are some of the symptoms infectious diseases specialists are getting calls about after people test negative for COVID. They may start on your knees or arms and ...

Living with chronic spontaneous urticaria (CSU) can mean having many uncomfortable days. Worse yet, it can seem that the ...

If you notice red, itchy welts suddenly popping up on your skin, you may start to panic. Are you having an allergic reaction? Did you catch something contagious? But your mystery rash may have a much ...

Norovirus doesn’t usually cause a rash, though some people develop hives. A rash that accompanies stomach symptoms may suggest a different stomach virus or inflammatory bowel disease. Norovirus is a ...

We usually think of COVID-19 as a viral illness that causes respiratory symptoms, like congestion, sore throat and a cough. But, like a surprising amount of other viruses, the coronavirus can also ...