<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing a skin rash lately thats quite itchy and red. Its mainly on my arms and legs. Could you please tell me what medical tests I need to take?  <response>: Based on your symptoms, we need to perform a complete physical skin exam to get a better understanding of the rash. Well also need to biopsy the skin, and check for the presence of Human papillomavirus DNA. Additionally, we need to perform a pelvis exam and rectal examination to see if theres any underlying issue causing the rash. A depression screen will also be conducted, and other therapeutic procedures on your nose, mouth, and pharynx will be checked for. So, lets schedule an appointment for the complete physical skin exam, and further tests will be conducted based on the results of the exam. 