The front part of the stool is normal, and the rear part has many grooves. What's going on?

The anal

sphincter

is an important muscle in the control of defecation. If the patient has anal sphincter relaxation problems

, the stool may be squeezed with grooves formed during the discharge process. It is recommended that

patients with grooves in the stool should consult a doctor for further examination and evaluation to determine if there are other potential problems.