0 why the anus, after going to the toilet, wipe is always a little

Menstruation has nothing to do with the anus, it's probably a bacterial infection! Get some anti-inflammatory and antiseptic medicine and wipe it will be fine, I have itched too! Nothing, no worries.

To see if you have hemorrhoids, or if you are pushing too hard or if you have sores, you may want to check it yourself. If so, you can go to the hospital and prescribe medicine.

Anal itching may be anal fissure or perianal eczema, it is recommended that you confirm it first; You can also try (after defecation) pepper water fumigation, and then apply Ma Yinglong hemorrhoids ointment, or clotrimazole ointment. If the effect is not good after using it twice, go to a regular hospital for a check-up.

According to your description.

It is recommended that you go to the hospital immediately for a check-up. >>>More

It is recommended that you rub it with iodophor, pay attention to personal hygiene, and insist on good anal care to avoid recurrence. Specifically, wash after using the toilet, sit in the air for ventilation, and use potassium permanganate sitz bath once a day for a 20-minute course of treatment. However, it is not easy to do this, it is necessary to prepare an anorectal rehabilitation kit, which has a hand-held washlet to help clean after the toilet so as to ensure that it is clean after the toilet, a painless breathable cushion to help suspend the wound and promote the resolution of edema, the anorectal rehabilitation kit hospital has, but it is more expensive, it is recommended to buy it online, beware of fakes that seem cheap. Best wishes.