title: Unexplained pain during epidural anaesthesia.
mesh_terms: D000328:Adult; D000767:Anesthesia, Epidural / Q000009:adverse effects*; D000773:Anesthesia, Obstetrical / Q000009:adverse effects; D005260:Female; D006801:Humans; D008297:Male; D010146:Pain / Q000209:etiology*; D011187:Posture; D011247:Pregnancy