Suggest Treatment For Anal Itching, Anal Skin Tags And Tears Around Rectum

what type of doctor is best to see for anal itching , possible anal skin tags and some tears around the rectum. I have just been diagnosed with a food allergy to wheat. When I mistakenly get some wheat in my diet I get a bad rash around my anus. The rash often gets compromised by a yeast infection due to steroids I use to treat my asthma. I am so uncomfortable.