You are suffering from scalp folliciculitis. This is a condition where your hair root gets infected frequently. You will initially need a course of antibiotics for 1 to 3 months and be put on some sort of maintainence. Like pimples this can recurr and proper follow up and maintenance will be needed. If not responding to standard antibiotics you will need to undergo a bacterial culture and sensitivity test to find out which antibiotics will work for the infection. Warm Regards. Dr. Rajdeep Mysore. Chirag Hospital Bangalore