anismus

anismus

[ānis′məs]
an extreme contraction of the external anal sphincter.

anismus

Gastroenterology An idiopathic form of anorectal outlet obstruction that affects older ♀ and young boys, characterized by inappropriate contraction and typical EMG changes in the pelvic floor muscles and external anal sphincter Clinical Constipation, perineal pain, defecatory dysfunction Pathogenesis Anismus may be a functional defect, as no organic cause has been identified Management Biofeedback training

anismus

(ă-nĭz′mŭs)
Excessive contraction of external sphincter of rectum.
References in periodicals archive ?
Roughly 50% of all cases of chronic constipation are due to a failure of coordination between the pelvic floor muscles and the anal sphincter--a condition called dyssynergic defecation, or anismus.
Functional constipation that stems from abnormalities in the structure of the anus and rectum is known as anorectal dysfunction, or anismus.