You need to perform a complete physical skin test to understand the rash better according to the symptoms. You also need to make sure that your skin is intact and that you have a pharynoma DNA. You also need to do a hip test and a rectal exam to see if there is a fundamental problem causing it.
Doctor, I've recently experienced a very dark, red skin rash, usually in my arms and legs, and can you tell me what medical tests I need?