Tramadol
"Took tramadol for 15 years for a ruptured disk ,I had sooo much pain the last three weeks I was considering suicide !!!! These were all of my symptoms 
Face swollen some mornings 
Hands swollen.  Feet itch, bruise easily, lack of concentration, memory problems, hair loss
Neck aches at base of skull
Bad headaches And head itches 
Weight gain,  Dry skin dry hair 
Cold intolerance,Lack of energy 
Muscle cramps / burning 
Loud Ringing in both ears
Neck feels like I am choking 
Running into things a lot 
Dizzy almost pass out do black out about once a year or so 
Blurry vision ,Can't take deep breath in ,Hurts my insides to process food
! Had blood test said thyroid was not working. STOPPED taking tramadol and 24 hrs later ALL symptoms are GONE!!!!"