Hello doctor,,,am swapna,,,i got black marks both corners of my lip and it spreaded to down lip also...since four months am suffering with this problem...one mnth back i consult doctor(skin spl)he told that am suffering with sibmel,and he suggest me onintment(mometasone forate creame USP,ELOCON) and some tablets, i used it one mont,but i didnt find any imporvement in it...please suggest me any solution for it..thanku