hi Dear sit my case is i think so complicated.... my age is 25 years old and i have doing hand job from 15 years since 2000 .... if starting time i don t fell any weakness but from 2009 i have feeling weakness and paining in knees is started and i fell little weakness........ and my pansies is going to bi a weak its not very tied slowly slowly the weakens is increased ....... and effect on my head and on eyes .. .. and now i have not enjoy fully consumed that work ... and i feel weakness in all my body specially in my whole legs .. and most specially its effect on my shoulders ... i fell the hot fire is burning in my shoulders......... so kindly help me ..... because after 6 months i have going to bi married