Brief Answer:
Seems like subcuticular infection

Detailed Answer:
Hi,
Thanks for your query, albeit short and specific.
Noted the history and understood the concerns.

The picture is quite clear and shows pustulous formation in a patch in the perianal skin - subcuticular infection thus causing soreness and pain.

There is also a skin tag that looks edematous.

I hope this answers your query.
Please feel free to ask for further queries.
Regards

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Brief Answer:
As detailed below.

Detailed Answer:
Thanks for following up,

Take a Sitz bath in a tub with warm water for soothing effect.
Take a stool softener or a laxative to keep stools soft for easy evacuation.
Take an anti-inflammatory like Ibuprofen if it suits you.
Apply liquid povidone iodine locally.
For proper antibiotic, you need a valid prescription from your Doctor.
All these will help you to get a relief and possible cure.

Once the pain and swelling go away a proper per-digital examination and ano-proctoscopy should help to get any primary cause and get treated accordingly.

I hope this answer helps you.
Please give feedback and ask for relevant queries if you feel that there is a gap of communication.
Regards

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Brief Answer:
It will go away eventually, just follow the advice

Detailed Answer:
Great to know that you are already on the antibiotic.

Which antibiotic are you taking now?

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Brief Answer:
good one. should help.

Detailed Answer:
Cephalexin is a good antibiotic, it should help. Continue for a few days, take other treatment as mentioned above.

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Brief Answer:
Usually a few more days if everything is favorable.

Detailed Answer:
Depends upon the circumstances, the way you take care and the way it responds to medications.
Should take a few days.
Please post a fresh photo.

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