I am a 45 year old male. 20 years ago I developed acute pain in my lower calf muscles while running. I was a fit and active person throughout my life up to that point. Seveal doctors and specialists declared there was nothing wrong. A year ago I had a muscle biopsy that found "structural mitochondria abnormalies". This may point to some form of genetic muscle disease. I am presently under the care of a geneticist, but all tests to date to obtain a diagnosis and prognosis have been negative.
In addition to my legs, my symptoms now include: spasims in most major muscles; constant pain in my forearms; higher than normal sensitivity to contact with my fingernails; general weakening of the muscles.