"Does straining during bowel movement lead to hemorrhoids, and do they disappear after defecation?"

Straining during bowel movements can cause hemorrhoids, but they disappear after defecation, which may be due to hemorrhoid prolapse, anal sphincter spasms, and other reasons. It is recommended that patients seek medical attention promptly and undergo treatment under the guidance of a doctor.

If a patient has internal or mixed hemorrhoids, conditions such as constipation or diarrhea can increase abdominal pressure, leading to the prolapse of the hemorrhoid nucleus. During bowel movements, the anal canal area is stimulated, causing hemorrhoids to appear when straining. After defecation, the hemorrhoid nucleus usually retracts into the anus by itself, explaining why hemorrhoids appear during straining but disappear afterwards. In such cases, patients can be treated with compounds such as Compound Carrageenan Cream or Mayinglong Musk Hemorrhoid Ointment under a doctor's guidance.

If a patient suffers from anal fissures or perianal abscesses, these conditions can damage local tissues, leading to anal sphincter spasms. During bowel movements, the affected area is stimulated, causing hemorrhoids to appear when straining. After defecation, the symptoms gradually subside, accounting for the disappearance of hemorrhoids. Patients can take medication such as Ibuprofen Tablets or Celecoxib Capsules to relieve pain.

Conditions like proctitis and rectal polyps can also cause similar symptoms. Patients with proctitis can be treated with Mesalazine Enteric-coated Tablets or Sulfasalazine Enteric-coated Tablets. Rectal polyps require surgical removal. Additionally, this condition may be related to intestinal tumors. It is recommended that patients consult a doctor promptly and cooperate with targeted treatment.