For about a month I have had a distinct red and itchy patch both sides of my bum crack which started at the top then worked down to the middle part. At the onset my vagina was also irritated but that has gone. I have tried Canesten Dermaid and Resolve 1% thinking its fungal. I also get dermatitis in my scalp and ears sometimes down the sides of my nose which responds to Dermaid although nothing seems to get rid of it completely. Are they related ? and what should I be using to clear the bum crack problem ?