Why is the inside of my rear end itching (Not very often only like 3 times a week)? Is it normal?

It could be worms, you can buy worming tablets from your local chemist, and it is advised buy experts that you worm the whole family, as they can be past on from one to another.Experts also advise that if you have any pets, such as a cat or a dog, that you should worm them as well, buy there tablets from a pet shop.