peripheral neuropathy
"After visiting a neurologist for burning and tingling pain in both feet, I was diagnosed with peripheral neuropathy and pre-diabetes.  (I'm slender, always ate a well-balanced diet, and exercised.)  I tried various medications but the side effects outweighed an pain relief.   I have been on Gabapentin (neurontin) 200mg at night for four years.  It doesn't relieve all pain, but it does allow me to sleep through the night.  I wake up every morning in pain, which continues on and off all day.  However, I have very little side effect (occasional sadness, irritability, nausea).   Neurontin allows me to have a reasonable quality of life, and very inexpensive."