Sometimes i feel very strange feeling in my legs hands muscles sometimes in my shoulders too. I cant describe this feeling. It feels like something strange happening in muscles and i feel my body will be starting trembling. It feels like increasing when i try too sleep and rest. It is happening from 2 months and whenever this happens anxiety occurs. I also have constant chest pain in left side from one month. All test came normal like ecg echo tmt thyroid neuro (mri - brain, eeg) etc. please help me. Medicines i took - esipram 10 Etoricoxib ace proxyvon rabium dsr etc. Please help what is this happening. Is it side effect of esipram 10.