John is a medical writer and editor with more than 15 years experience in the field. She is a former medical officer for the Centers for Disease Control and Prevention. Many medical conditions can cause skin rashes on the arms and legs. But a red rash confined to one arm usually indicates a local process as opposed to a widespread medical condition.
The location, appearance and color of a rash will help your doctor make a diagnosis. Look for care suggestions on this chart for common rashes and other skin conditions. Is your face, chest or back covered in small, pus-filled sacs or pimples, blackheads or sore, red bumps? Do you have a flushed appearance, perhaps with redness around your cheeks, chin, forehead or nose?
Mariah94 over a year ago. I hate this website. I read so many posts of issues but never read about any solutions for my similar ailments. Guest over a year ago. Hope this helps.
You are dressing your 3-year-old child when you notice a rough, pimply red rash on her back and chest. You also find it on her arms and legs. What could it be? Should you call the doctor? You pick your 6-year-old up from school and notice his cheeks are bright red.