<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello doctor, I have a skin rash that appears irregular on my scalp and also on my skin. I also noticed some acne or pimples and skin lesions. What could be causing all of this?  <response>: It seems like you have psoriasis. Its a common skin condition that causes abnormal appearing skin, skin lesions, and can also lead to acne or pimples. 