I am a 67 year old male in relatively good health. I am controlling my prostate cancer with Trelstar hormone therapy. For the last four years I've had peripheral neuropathy, caused by taking DCA. I just have numbness and tingling in both legs from the knees down through to my feet. Other than what I'm going to tell you now, I have no pain in my legs or feet. My problem is as follows. About every 3 months I am awoken around 5 or 6 a.m. by extreme pain in my right foot. About every 30 seconds it feels like someone is pushing the point of a knife into my foot. I'm not exaggerating. It is almost unbearable. The pain lasts about 2 to 5 seconds and has occurred in the top of my foot, the top of my big toe just behind the knuckle joint and lastly about 1 1/4" further back from the knuckle joint (2 days in a row for the first time). My foot looks normal. There is no swelling, no redness and no burning feeling. The stabbing pains last from 3 to 6 hours. When it happened just behind my toe knuckle, I could feel the pain coming from the nerve just under the skin, that I could wiggle along the top of my toe. Any of the creams or painkillers my GP doctor has recommended do not help at all. The only way I can stop it, is by walking on my treadmill. As long as I am walking, I'm pain free, but immediately after stopping, the pain returns. At my age and my asthma, I can only walk for 30 or 40 minutes and I have to stop. Do you know what this is and can it be corrected with surgery or some other kind of pain killing injections? Thank you.