A mispositioned menstrual cup can block urine flow, leading to kidney swelling, as seen in a recent BMJ Case Reports case. A woman experienced pain and blood in her urine due to ureter obstruction from her menstrual cup. Her symptoms resolved after discontinuing its use. Though rare, similar cases have been reported. Doctors stress the importance of correct cup positioning and size selection, urging better education and patient guidance to prevent complications.
The warning was issued after an uneven placement obstructed urine flow into the bladder.
Doctors warn that an improperly positioned menstrual cup can cause more than just leakage—it may lead to serious complications, such as uterohydronephrosis, a condition in which a swollen kidney results from blocked urine flow into the bladder. This warning…
