I was 16 year old when the world came crashing down on me in the form of my hair, I had terrible dandruff, itchy scalp for two years. Then ketoconazole came to salvage the situation. I have been using ketoconazole on and off but now it seems it has stopped working. The itchy scalp and small red pimples are back the dandruff is little though. But I am afraid that I might go back to my old condition. What shall I do.