Heavy aching fatigue pains in arms strtd 2yrsago w/nausea/lightheaded as if i hadn't eaten all day. has returned&now involves legs. any ideas? please

Get muscles checked: As a rheumatologist, I am concerned about muscle inflammation if you are weak in your arms and legs. Not sure about the nausea though. Are you taking a statin drug for cholesterol? This can cause muscle aching and weakness. Muscle inflammation can usually be detected by a blood test (CPK is one of several used). If you have neck issues, check for narrowing around the spinal cord (stenosis).