<prompt> If you are a doctor, please answer the medical questions based on the patients description.I am 24 years old. I am having burning sensatins in my arms legs stomach rectum areas. It is getting worse. I have had a cat scan and a rectum test. Everything is negative. I have been tested for stds, hiv and several other things. they were negative to. What do you think the issue is.  <response>: Hi, thanks for using Chat Doctor Burning sensations may be related to peripheral neuropathy. The peripheral nerves carry nerves to and from the brain. Abnormal sensations can occur due to abnormal structure and function of these nerves. It is possible that this may be the cause of the burning. Causes of neuropathy are: 1vitamin b12 or folate deficiency2trauma3liver and kidney disease4diabetes5some hormonal diseases6exposure to toxins7neurological diseases-such as stroke, ms8idiopathic-cause not downpour doctor may be able to assess you or refer you to someone such as a neurologist. I hope this helps 