Hi ! I am a cancer survivor with several medical issues from kidney 4 th stage cancer , thyroid cancer recently had iodine therapy , had colonoscopy 2/3 months ago ! Now, I have this very itchy , I can t stand the itchyness of. Small like pimple above my anal crack , for the last 2 months ! I have applied , triple antibiotic, 1% hydrocortisone ,triamcinolone acetonide cream, 1% , wart remover , not healing at all ! My daughter tells me, it looks like a small pimple / mosquito bite like. Reddish with grey scab or hard skin on top . What could this be ! Skin cancer perhaps ? Should I see my dermatologist ASAP ? Thanks for any help !