Can constipation cause urinary retention?

Not usually: Some problems that cause constipation, such as electrolyte or nerve disorders can cause bladders to retain urine. Best to be examined by your doctor and ask this question.

Rarely: Severe stool impaction can cause urinary retention especially in chidren. A large hard bolus of stool can compress thethra ; even push up the bladder neck. Such patients usually need a manual stool disimpaction followed by vigorous enemas ; should consult with a gastroenterologist if they have not previously done so.

Yes: Sometimes there is enough stool in the colon and the bowel becomes enlarged enough so that it can mechanically obstruct the outflow of the urinary tract/bladder. Work to keep stool soft and formed with generous daily water intake, dietary fiber and exercise:)