hmm this is a tricky one...i suppose steroids will cause some kind of physical symptoms when coming off due to the lower test levels resulting in not feeling so good and the testes not working in the same way(which is a physical symptom) but i think it is mainly a mental thing.with heroin and other opiate based painkillers your body gets used to having these levels of opiates in the body so when these opiates arent coming in anymore it causes horrible physical symptoms as the body tries to adjust to not having the opiates in your body(vomiting,constipation followed by diarrhea,shivers and shakes caused by blood flow not pumping as quick which makes you feel cold,stomach cramps,sweating etc etc..)these are real symptoms which cause serious pain and distress not to mention the mental dependance and the depression people feel after the physical withdrawal is over
so if your comparing it to that then no way is there physical symptoms worth noting but i suppose there are small physical symptoms, i would say it is more of a mental addiction which causes you to feel like your getting physical symptoms...but that is just my oppinion