Skin conditions: Dermatitis and psoriasis can cause itching. Anal or rectal disorders: Examples include conditions such as piles, anal fistulas, and anal fissures. Infections: Sexually transmitted infections (STIs), especially those that involve parasites, can lead to itching.
In respect to this, can you have an itchy bum without worms?
A fungus, like the one that causes most vaginal yeast infections, can also cause anal itching. And certain kinds of bacteria can, too. For example, a staph skin infection can happen almost anywhere, including the area around your anus.