Top dermatologist/skin specialist in chennai????

who is the best dermatologist/skin specialist in chennai to treat severe skin conditions....|||Fifteen years back, I have visited Mr.Kambaiah,who had dispensary on Parasuwakkam high Road,Opp. to Dasprakash Hotel ( Ega theatre to Central Railway Station high way). He is noted dermatologist. Even number of north Inidians used to come to him. He is a common mans doctor.Everybody has to go in que and he charges nominal fee without discrimination. Plese enquire once and go.