<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been a drug addict for years now and I have recently noticed some changes in my health. I feel fatigued most of the time, have lost a lot of weight, and have been getting frequent skin rashes. What could be wrong with me?  <response>: Based on your symptoms and history of drug abuse, its possible that you have contracted HIV, which is a viral infection that attacks the immune system. I would recommend getting tested as soon as possible to confirm the diagnosis and start treatment if necessary. 