<prompt> Grisefulvin given for the treatment of fungal infection in the fingure nail dermatophytosis for how much duration4 weeks6 weeks2 months3 months  <response>: D i.e. 3 months Tinea unguium is dermatophyte infection of nail plateQ. It is treated by topical ciclopiro oleamine amorolfineQ in cases without nail matrix involvement andor oral terbinafine, itraconazole, fluconazole and griseofulvinQ in cases with nail matrix involvement. 