Central nervous system alterations in endometriosis: a systematic review of neuroimaging and electrophysiological studies, with appraisal of menstrual cycle phase and hormonal status reporting

Systematic review of human neuroimaging and electrophysiological studies in endometriosis, with appraisal of menstrual cycle phase and hormonal status reporting and of pain-phenotype stratification. This registration documents the protocol and methods of the review as conducted; searches (PubMed, Web of Science, CNKI; 28 September 2026), screening, data extraction and first-pass risk-of-bias assessment were completed before registration, and this timing is reported openly.