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1. since your age and sex is unknown, thus it is wise to mention that it mostly occurs in Men than in women in between 40-60 age group, and since it is a symptom and not diagnosis thus one has to undertake a meticulous examination to find any secondary [hidden] cause of the same.
2. since fungal infections are common around anal area, thus moist,warm conditions and/or sweating around Anal area both results in overgrowth of Candida (yeast infection) causing fungal infection resulting in inflammation and subsequent irritation and itching.
PS. also one has to look out for any Immunocompromised state [as routine] like
diabetes,HIV
3. In Ayurveda we hold that most of the itching is caused due to problems associated with ‘Vata dosha’ and by pacifying the aggravated ‘vata’i.e. impurities in the Rakta (blood) and
Stress we can bring down the signs and symptoms of itching.
4. Make sure, after bath you give enough time to the area to get itself DRY, either Sun exposure or drying with Soft Towel,because Fungus grows in warm, and moist area.
5. Reduce sugar intake, as it is the main food of yeast, bacteria and fungus.
6. You can opt for a variety of Ayurveda medicines like Haridra,Amalaki,Trikatu,
Triphala,
Neem capsules,Haridrakhand,Agastya Rasayan by Consulting with an Ayurveda Physician for further necessary management.
7. since itching is main concern thus WARM sitz bath [kati snan in Ayurveda] is recommended. [Boric acid sometimes may cause irritation or problems from absorption, thus if irritation persists, consult your Doctor]
PS. because hot baths cause blood vessels to dilate, on rare occasions some people can feel dizzy or have palpitations (rapid or
abnormal heartbeat), do check with a cardiologist regarding any baseline Investigation.