question: I had been under treatment for Pimples around 6 months. I was prescribed Acutreat 10mg, Zatrin 500 Mg and some facial ointments. My skin had been improved a lot and stopped the medication as per doctor suggestion. After 3 months of stopping medication i have noticed a small black mark on upper lip, (In beteen upper lip and nose) and that gradually increased. same kind of black spot are noticed under the eye as well. Does these black spots are side effects of Pimple treatment. Does side effects will show 3 - 4 months after stopping the treatment . But One doctor adbised me to take Celin tablets and clop ointment for it. But no much improvement. when i take another doctor opinion i was informed that these spots are due to deficiency of B12. I am currently on B12 supplements but this supplements causing severe pimple and make my face completely mess. Kindly one suggest what could be the reason.