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

In some cases, skin reactions may not clear up unless you ... You can get heat rash under your arms for a lot of the same reasons that you can get infections and irritation, especially blocked ...

Is it just in one location, like your face or one arm ... and other allergic reactions may develop after taking medication, for instance. Other medications cause rashes as a known side effect ...

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.

An allergic reaction, or when your immune system overreacts to a harmless substance, can sometimes manifest in the form of a rash. An allergy rash can be uncomfortable and lead to infections ...

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