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

### input:
Dear Dr.Thanks for taking the time to read my question. Id appreciate your advise.I am a 31 year old made who suffered a back injury playing badminton in October 2010. Ive been in mild/moderate chronic low-back pain since then. The MRI report shows a minor disc bulge in L3-4 and L4-5 sections. However, since a few months ago, Ive have started experiencing symptoms of tingling, pin-needles and mild nerve pain, pretty much all over the body. The tingling/pin-needles is experienced in the head, face, arms, shoulders, legs, and sometimes even inside the eye! The mild, fleeting nerve pains also occur pretty much everywhere, predominantly in the legs. There is no numbness. These symptoms begin as soon as I sit down on the floor, in my office chair or any chair/sofa at home. Sometimes I also feel an mild outward pressure being exerted from the inside of the top of my head and feel a mild pain in the center of the chest. These symptoms alleviate once I stand up and start walking, although Ive felt tingling in the head/face when I am standing upright.Are these symptoms attributable to my back injury from way back? Is it compressed/pinched nerve? Its very distracting and worrisome to experience these symptoms.Any advise is appreciated.RanjitP.S:Ive consulted a Neurologist and done  numerous tests. My D3 and B12 are within the normal range. My brain MRI and evoke potential tests came out with normal results as well.

### output:

Well... obviously, a nerve problem. The symptoms involve quite a lot of nerves that do not directly connect to each other. It is common, however, for irritated nerves/spine to cause other nerves to be influenced by the activation of the irritated nerve (called WIND-UP). Often, this occurs In the brain. An overall nerve damper (amitriptyline or gabapentin or pregabalin are used commonly for this; anti-epileptic Chat Doctor. 