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

### input:
I am a 24 year old male smoker with a clean bill of health, no known allergies, and no family history of cancer or illness . For last 6 months I have had general weakness and ongoing discomfort in my lower/middle left abdomen area: sometimes its enough to wake me up; I feel better after a bowel movement and or urination . I also have... - joint pain -slight numbness in my left leg, left testicle and lower back. -when I urinate I have a burning sensation on the tip of my penis that comes and goes - when I push hard on certain area on my lower left abdomen I have a quick sharp pain that I can feel in my anus - frequent loose stools - frequent diarrhea - I ve also lost ten pounds recently but I have had a more active life style and I ve been going to the gym My GP can t seem to figure out what is wrong. I ve already had... -full blood and urine work -an MRI of my spine -a three day stool study -an ultrasound of my left testicle and lower left abdomen I forced them to schedule me for a colonoscopy next week.. Everyone tells me its just stress/anxiety but I just dont feel like myself anymore and I think something is wrong. Can all of these symptoms be explained by something benign... ie gas, ibs, stress, pinched nerve, etc All these tests are depleting my savings... What should I do? Whats wrong with me? Are there any other tests you would recommend.

### output:

Hello! Your young age, lost of weight, abdomen pain and joint pain might be explained by Crohn's disease (but it doesn't have to be it). The best way to rule it out is colonoscopy. If it does not show the reason of your symptoms, CT of small intestine might be necessary as colonoscopy visualizes large intestine only. Only when this test is done, IBS might be recognized. The other option to explain your symptoms is an inflammation of the prostate gland. There should be any signs of inflammation in your blood tests and urine tests. You should visit urologist for physical examination of your prostate if this is suspected. Take care