 [ Symptoms ] why do i feel lightheaded fatigued and sweat during sleeping no fever  i am an almost 37 yr old female with a lot of stress right now dr put me on effexor and i started not being able to sleep having bad headaches feeling lightheaded and constipated i took it for 2 weeks and he told me to stop when i called him he called me in something else but i am afraid to get it i have been on paxil prozac and celexa and never felt this horrible i have not taken anything in almost a week but feel lightheaded many times thoughout the day any ideas what could be wrong [ Disease ] it would be better if it is done with ultrasound guidance but its not compulsory depending on the painful part the injection can be given