title: Clinical subtypes of core premenstrual disorders: a Delphi survey.
abstract: The purpose of this study was to classify the clinical subtypes of core premenstrual disorders during the International Society for Premenstrual Disorders' second consensus meeting. Multiple iterations were used to achieve consensus between a group of experts; these iterations included a two-generational Delphi technique that was preceded and followed by open group discussions. The first round was to generate a list of all potential clinical subtypes, which were subsequently prioritized using a Delphi methodology and then finalised in a final round of open discussion. On a six-point scale, 4 of the 12 potential clinical subtypes had a mean score of ≥5.0 following the second iteration and only 3 of the 4 still had a mean score of ≥5.0 after the third iteration. The final list consisted of these three subtypes and an additional subtype, which was introduced and agreed upon, in the final iteration. There is consensus amongst experts that core premenstrual disorder is divided into three symptom-based subtypes: predominantly physical, predominantly psychological and mixed. A proportion of psychological and mixed subtypes may meet the DSM-IV diagnostic criteria for premenstrual dysphoric disorder.
authors.affiliation: School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK. k.ismail@bham.ac.uk
authors.forename: Khaled M K
authors.initials: KM
authors.lastname: Ismail
authors.forename: Tracy
authors.initials: T
authors.lastname: Nevatte
authors.forename: Shaughn
authors.initials: S
authors.lastname: O'Brien
authors.forename: Elena
authors.initials: E
authors.lastname: Paschetta
authors.forename: Torbjorn
authors.initials: T
authors.lastname: Bäckström
authors.forename: Lorraine
authors.initials: L
authors.lastname: Dennerstein
authors.forename: Elias
authors.initials: E
authors.lastname: Eriksson
authors.forename: Ellen W
authors.initials: EW
authors.lastname: Freeman
authors.forename: Nick
authors.initials: N
authors.lastname: Panay
authors.forename: Teri
authors.initials: T
authors.lastname: Pearlstein
authors.forename: Andrea
authors.initials: A
authors.lastname: Rapkin
authors.forename: Meir
authors.initials: M
authors.lastname: Steiner
authors.forename: John
authors.initials: J
authors.lastname: Studd
authors.forename: Inger
authors.initials: I
authors.lastname: Sundström-Poromaa
mesh_terms: D032921:Consensus; D003245:Consensus Statements as Topic; D003697:Delphi Technique; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006302:Health Services Research; D006801:Humans; D011293:Premenstrual Syndrome / Q000145:classification* / Q000175:diagnosis* / Q000523:psychology