What Causes Acne On Face Post Decadan And Practin Withdrawal?

Hi, I used decadan n practin 2 yrs ago for a week. I didn t start taking gradually but started to take medium dosage right from start not sure of the mgs. 6kgs were increased on my body in a week. I ate a lot and didn t hate the foods which normally I don t use to take for its taste. Fresh hair grown which I lost due to hair thinning n dandruff. Woke up early morning which my body nvr allows me do otherwise. So many positives. But after I stopped abruptly ,I lost those 6 kgs gradually and got pimples on my face and back side of my body, which left marks. Now I would like to take again. Is it adviceable?