Thanks for writing your query.
Severe anal itching can be due to presence of threadworms.
Severe scratching can result in soreness of the anal area.
You should do de-worming by taking Mebendazole
one tablet twice a day for 3 days. You should repeat the treatment after 2-3 weeks.
If you are diagnosed with having piles, you can locally apply ointments
along with Calcium dobesilate.
Sitz bath is also beneficial in such cases.
Also take care of hygeine of the anal region.
I hope this is helpful to o.