For the 2020 Chronic Pelvic Pain Guidelines, new and relevant evidence has been identified, collated and appraised through a structured assessment of the literature. A broad and comprehensive literature search, covering all sections of the Chronic Pelvic Pain Guidelines was performed. Embase, Medline, the Cochrane Central Register of Controlled Trials and CINAHL databases were searched and papers were restricted to English language publications. Additional references and text updates have been incorporated throughout the text as a result of this search. In addition, a review of all the references has been undertaken by the Panel and those considered of a low-level of evidence have been removed.