"The 'sharp cutting pain' during the passage of hard stool, followed by relief when stools are loose, is a hallmark sign of an Anal Fissure (a small tear in the lining of the anus). The recent swelling you've noticed after a bout of loose motions could be a 'Sentinel Pile' (a skin tag that forms at the base of a chronic fissure) or localized inflammation due to the irritation caused by frequent bowel movements
Next Steps
Sitz Bath: This is the most effective immediate remedy. Sit in a tub of warm water for 10–15 minutes, 3 times a day. It helps relax the anal sphincter muscle and promotes healing.
Fiber and Stool Softeners: Even if you have loose motions now, you must ensure that your stools remain soft (not watery and not hard) in the future. High-fiber diet and Isabgol (Psyllium husk) are highly recommended
Health Tips
For a detailed guide on the best fiber-rich foods for fissure healing, a review of your current symptoms, and direct follow-up, you can consult me directly through my profile.