Ischemic colitis is a rare condition. It represents 3 to 10% of lower digestive hemorrhages. It preferentially affects the subject over the age of 50 with predisposing factors. Rare cases have been reported in young subjects with the use of cocaine, combined hormones or antipsychotics.

This work aimed to study the potential side effects of antipsychotics

We report a case of ischemic colitis associated with antipsychotics.

A 27-year-old patient, followed for 2 years for schizophrenia treated with antipsychotics (chlorpromazine and haloperidol) and an antiparkinsonian (Biperiden), consulted in the emergency room for rectorragies progressing for 3 days. The examination revealed the installation of diffuse abdominal pain associated with early postprandial vomiting which preceded the 7-day rectal bleeding. The physical examination revealed ascites without edema of the lower extremities. The stools were normal-colored on digital rectal examination. The biological workup revealed anemia and a biological inflammatory syndrome. The abdomino-pelvic scanner showed thickening of the entire colonic wall with signs of recent bleeding. The rectosigmoidoscopy showed an ecchymotic aspect of the sigmoid with less pronounced involvement of the rectum. Pathologic examination of the colonic biopsies concluded with ischemic colitis, showing hemorrhagic suffisions with numerous fibrinous thrombi of the vessels. The course was marked by the onset of multi-organ failure with acute renal failure, a picture of disseminated intravascular coagulation (DIC) and alveolar hemorrhage. Despite the resuscitation, the patient died 2 days after admission.

Ischemic colitis is a rare side effect of antipsychotics. Although rare, this entity should be evoked and diagnosed in time.

No significant relationships.

Ischemic colitis (IC) is a rare condition due to hypoperfusion in the large intestine. Usually the etiology is unidentified, but many drugs are known to induce it because of their anticholinergic effects. We present the case of a 63-year-old woman, with the diagnosis of histrionic personality disorder, in treatment with quetiapine and venlafaxine. She attended the hospital due to diffuse abdominal pain, diarrhea and hematochezia in the last two days. An abdominal CT scan is made, showing parietal thickening and submucosal edema in the colon, without any tumoral findings, suggesting IC.

To point up the correlation between IC and the intake of psychotropic drugs.

We conducted a narrative review of the literature through the presentation of a case. Articles were selected based on their clinical relevance.

There are reported cases of IC related to antipsychotics, but any drug with anticholinergic effects can potentially cause it. Anticholinergics reduce intestinal motility, leading to colonic ileus and dilatation. Both quetiapine and venlafaxine, taken by the patient, have these effects. Common obstructive and non-obstructive processes are excluded due to the absence of any other pathological signs. For these reasons, the diagnosis of IC secondary to treatment with quetiapine and venlafaxine is made.

Many psychotropic drugs can produce IC owing to their anticholinergic effects, being this chance increased when taken simultaneously with other drugs with same effects. IC is a rare but fatal side effect, which makes it important to consider it in the differential diagnosis in patients in treatment with psychotropics who suffer from gastrointestinal symptoms.

No significant relationships.