Medically reviewed by Daniel More, MD Hives (urticaria) are a common skin reaction that causes bumps, raised patches, or both ...

Hives happen when your body releases histamine due to various triggers, such as foods, drugs, insect bites, or infections. Treatment involves avoiding triggers, using antihistamines, ...

Dog hives (also called canine urticaria) are raised, itchy welts that can appear on dogs’ skin, usually in response to allergens. These swollen bumps can pop up anywhere on your dog’s body ...

However, COVID-19 hives can appear anywhere on the body, including on the joints. There is one type of rash associated with COVID-19 that primarily affects your joints; it’s known as COVID-19 toe .

No matter what’s happening inside your body, hives look the same. They’re usually red or skin-colored bumps that can blanch (turn white) when you press on their center.

There are a variety of causes that can result in a rash on the hands. Learn more about the potential causes and when a person should seek help, here.

WebMD explains the hives you get with cholinergic urticaria from heat, sweat, or exercise. Learn more about causes, treatments, and prevention tips for them.

Hives also "move around your body quite a bit," Walls says. You could have hives for several days, but the patch of hives may move from area to area, he adds.

Doctors say that's not always where the rash emerges. Many of the photos health agencies have shared show this rash on hands, legs, faces, and other visible portions of the body. Skip Navigation ...