My two year old son has infected scabs on his scalp.i took him to the doctor and she diagnosed his symptoms as a ringworm. I was reluctant to believe so because my son is around anyone but me,and i m a stay at home mom.and I for sure dont share his symptoms.the doctor prescribed him some antifungal drug;griseofulvin 2 tspns 2x daily but it seems things got worst(spreading). What should I do,be patient and hope for great results or take my son to see another doctor?