Hello,

It is possible that you have an internal hemorrhoid.

Hemorrhoid is caused by engorged veins at the lower end of the rectum and anus. In many people they may not produce any symptoms, while in others there may be blood during passing stool.

In your case, I suspect that constant friction of the veins as well as the jogging movement of the rectum for a long time (as after running after a long time) is causing the engorged veins to leak blood. A rise of the abdominal pressure can also contribute to the veins becoming more engorged and bleeding.

You need to be examined by a proctologist (a doctor who specializes in diseases of the rectum and anus). Other causes of bleeding while passing stool are rectal or anal polyps, diverticula, any growths etc. But, since in your case, it happens only after running, I suspect that hemorrhoids are the cause your bleeding.

You can try applying Anusol suppositories every night for 7 nights to cause constriction of the veins and stimulate healing. But an examination by a proctologist will be the best course of action to take.

I hope this helps.

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