Unlike immediate vaccine reactions—like anaphylaxis—COVID arm rash is generally harmless and resolves with minimal treatment.

If you have a red rash on your hands, arms, or legs that's accompanied ... a plant that causes an allergic reaction in up to 75 percent of people who come into contact with it.

Scratching is often pleasurable, which suggests that, in order to have evolved, this behavior must provide some kind of ...

An itchy, blister rash can be caused by an allergic reaction; an autoimmune disorder ... Wrists Between the fingers Under an arm Around the waistline Scabies can be transmitted through skin ...