What Causes Recurrent Folliculitis With Pus Culture Showing Coagulase Negative Staphylococci?

Hi Iam 25 years old male from pune. Sufferring from folliculitis of scalp since last 8 years..the foliculitis is recurrent. After completing the course of antibiotics my dr prescribes, it reappears within 2-3 months. Can you please suggest me a good dr in pune? The current pus culture shows "coagulase negative staphylococci".