I have never gone to rehab. I once went through precipitated withdrawal with suboxone (I was taking a much lower dosage of opiates at the time) but other than that I have never successfully completed withdrawal, it is too painful. The worst symptom is akathisia/muscle aches, it gets so bad that I cannot stop moving my arms and legs. It feels like something is crawling under my skin or an electrical current. I also have dealt with inability to control body temperature (boiling hot then freezing then boiling hot then freezing), uncontrollable yawning, diarrhea, nose and eyes won’t stop running. But the worst is the muscle aches, it’s absolutely unbearable.