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

### input:
The pain in my right hip area started about a month ago. It came on unexpectedly and without an injury or accident happening. It started as just an ache that I thought was arthritis. After two weeks the pain then started affecting my leg. The pain will radiate down my right leg and cause numbness, tingling and burning. My doctor has guessed that I have sciatica and has treated me for that. I haven t noticed any changes or improvements with the medications she has prescribed to me (Naproxen, Flexaril and Prednisone) X-Ray s showed no abnormalities. In the past three or four days I haven t been able to straighten my back. When I try to straighten it I feel slight pain in my lower back, but the pain isn t very severe. It s more that my back simply will not straighten, not due to pain, just due to inability to. What could be causing this?

### output:

Hi there, Thanks for your query. You have not mentioned your age, as there may be spontaneous collapse of vertebra in osteoporosis elderly people, causing pinching of the nerve supplying the lower limb. Even a trivial event (which the individual may not even remember) may cause it. MRI of lower spine will confirm the diagnosis, as it may be seen in a normal X-ray. Other causes can be spasm of Performs muscle (called Performs Syn Chat Doctor.  Nerve-pain-killers, such as, carbamazepine- used for treating epilepsy) will relieve the pain. Consult your doctor and apprise him of my opinion. I am certain that he will agree with me, get MRI done and will prescribe the advised 