I hit my head 15 months ago. One symptom I am very much confused about is random twitching in my body muscles. I would almost always have those sleep starts whenever I go to sleep and they would become much stronger if I am tired. What causes them ? They appeared out the blue after about 10 months after the hit and hasn't gone away. Do we have anybody here for whom itfaded away gradually ? How to manage them ? I read magnesium pills help?