Final answer:
Ovarian torsion may cause nausea due to severe pain and intra-abdominal inflammation, which requires immediate medical attention.
Step-by-step explanation:
Nausea is a symptom that can accompany severe, acute, unilateral abdominal pain in cases of ovarian torsion. In the event of ovarian torsion, nausea results from the ovary's abrupt twist, which has the potential to stop the blood flow and produce excruciating agony. Severe pain and other symptoms, such nausea, frequently come on suddenly. It is not always connected to the changes in hormones and intestinal peristalsis that cause nausea in pregnant women. Rather, it has to do with the severe discomfort and potential intra-abdominal inflammation brought on by the illness. If ovarian torsion is detected, it's critical to get medical help right once because it might have dangerous repercussions.