The information given by you is insufficient to answer  . Hygiene food is requirement. Don't eat hurry curry and burry foods. Please consult a Ayurvedic doctor online.

Treatment of anal itching depends on the cause of the problem. It may include taking self-care measures. After bowel movements, clean the area with plain water or mild soap. It may help to use moist cotton balls or a small squeeze bottle of water. Don't scrub. The goal is to keep the area clean without further irritating the skin. When traveling by air, take an empty squeeze bottle that you can readily fill with water in bathrooms. After cleansing, pat the area dry with toilet paper or a towel.You could place a moistened or dry cotton ball against the anus to help absorb moisture. Replace it as needed Scratching further irritates your skin and leads to persistent inflammation. You may find some relief by applying a cold compress to the area or taking a lukewarm bath.  Trim your nails short and wear cotton gloves while you're sleeping to help prevent scratching.

That is because of pruritis. Keep your anal region dry each time you deficate. Wipe with separate towel or tissue paper.

Could be because of worms infestation. Deworming has to be done. Also need to know some other factors. Please consult directly for proper diagnosis and necessary treatment.

This is not enough symptoms to say more things but may be there is boils or may be fistula in ano. I should ask some more specific symptoms about your issue to advise perfectly and consult properly. Advice. (It may just give mild symptomatic relief) 1. Take sitz bath with Luke warm water and allum powder. 2 to 4 time a day. 2. Drink adiquate water to avoid constipation. 3. Avoid junk food and spicy food.