### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hello Doctor, My name is Dave,  i m 25 years old, my height is 5.5 FT, my body weight is 29 KG only,and  I m from India.  I dont know why i m so skinny. Any person whoever looks at me comments me that I m the  live skeleton.I had TB in 1991 and Chickenpox by 1993. My mom and dad tried lots of  specialists, and I have had the lots of tonics by last year I went to GYM and there I  gained about 3 kgs in 2 months but after 5 months my joins started paining so I quit from  Gym. I dont know what to do.  Please suggest me what kind of treatment will cure my problems, so that I can look like an  average person atleast.  Please let me know if any kind of tests I have to do to find out if any kind of virus is  living me and that may be the bottleneck.  Thanks

### output:

Hi, Welcome to Chat Doctor. You are underweight and need to undergo tests to rule out the reason for this weight loss. Weight loss is very common in chronic infections, any kind of cancers and few viral infections. You have had TB and have you got complete treatment for that? If you have not completed full course of treatment for TB, then you might not gain weight. As far as viral infections are concerned, the most common viral infection associated with weight loss is HIV. But getting infected with HIV is most commonly through unsafe sexual intercourse. If you have had any such episodes, you should get yourself tested for the same. For now, I suggest you get yourself screened for any malignancies and untreated TB. As for your exercise schedule, try starting with low intensity stretches and then later switch to muscle building exercises. Please do not put much stress on your body. Your body needs to get used to exercise. Do not expect sudden results. As for your diet, you need to gradually increase your protein and fat intake. Get in touch with a dietician for proper diet advice. Thanks.