Serotonin syndrome occurs when there is too much buildup of serotonin in the body. This can occur with tramadol addiction. When this happens, the user becomes agitated and restless. Their blood pressure and heart rate are elevated. They are confused and sweat profusely.
Additional signs and symptoms of serotonin syndrome include:
Loss of muscle coordination
Rigid or twitching muscles
Dilated pupils
Goosebumps
Shivering
Diarrhea
Severe symptoms include irregular heartbeat, seizures, high fever, and unconsciousness. Serotonin syndrome can be life-threatening.