Anal itching is the irritation of the skin at the exit of the rectum, known as the anus, accompanied by the desire to scratch. Causes include everything from irritating foods we eat, to certain diseases, and infections. Treatment options include medicine including, local anesthetics, for example, lidocaine (Xylocaine), pramoxine (Fleet Pain-Relief), and benzocaine (Lanacane Maximum Strength), vasoconstrictors, for example, phenylephrine % (Medicone Suppository, Preparation H, Rectocaine), protectants, for example, glycerin, kaolin, lanolin, mineral oil (Balneol), astringents, for example, witch hazel and calamine, antiseptics, for example, boric acid and phenol, aeratolytics, for example, resorcinol, analgesics, for example, camphor and juniper tar, and corticosteroids.
"A wise old man told me that the water in a quench bucket (which is the bucket a blacksmith uses to cool iron rapidly by dunking the hot iron in it) was the best cure-all for poison ivy that he had ever used. When a friend came down with a bad case of poison ivy and told me that calamine lotion wasn't working, I shared the wise man's story. She promptly filled a plastic spray bottle with my dirty quench water and coated her arms and legs. A day later she returned to the shop wanting to sell the "magic elixir" to the public. The theory? Heavy concentrations of iron in the water accelerated the drying up of poison ivy blisters." 
The best defence and cure for poison ivy is, of course, to avoid it, so learn how to recognize the plants and be aware that they can grow as vines or shrubs. They can be spotted by their characteristic cluster of three pointed leaves. The leaves are shiny and the berries are green/yellow in color. Recognition is of particular importance for those people who love to be out in the countryside, camping and hiking. As a regular camper and hiker, you should already know that going into the great outdoors makes you fair game for a myriad of stinging insects as well as noxious plants like the poison ivy. If you are uncertain as to whether you will come across the plant or not, wear protective clothing, and if you are caught off guard, try to rinse off the affected area as quickly as possible to rid yourself of the plant’s toxic resin.