What is causing rash on back of upper arm this summer?

Various causes. There are several causes for redness on the back of your hands. These include a sun sensitivity due to an internal medication or topical creams, lime juice, or may be related to something going on inside your body. Seek care if this does not clear.

Related Questions

What could be the cause of a weird rash on back of arm?

Keratosis Pilaris. The most common cause of rash on the backs of the arm is keratosis pilaris. It is found in 50% of the population and presents as fine bumps with surrounding redness. It can also be seen on the sides of face as well as thighs. There are no great treatment options. I would recommend seeing a dermatologist if you want to have a definitive diagnosis. Other causes could be eczema or tinea versicolor. Read more...

What causes an itchy bump pink rash on back of arms and thighs?

Keratosis Pilaris. If it has been there for years, then it is usually keratosis if it is new then it could be one of many other things. If chronic, try a moisturizing cream twice a day with a mild acid in it, like eucerin plus. There are other keratolytic creams and lotions that will help, but there is no cure for keratosis pilaris. Read more...
Rash. This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed. Read more...