Service use data analysis of pre-pregnancy psychiatric and somatic diagnoses in women with hyperemesis gravidarum.

Introduction: The purpose of this study was to redress weaknesses in past studies of a psychogenic etiology for hyperemesis gravidarum (HG) by (1) estimating from a known population what proportion of HG cases also have psychiatric diagnoses, (2) determining if psychiatric disorder preceded HG, and (3) re-considering whether non-pregnancy somatic conditions also precede HG.

Methods: We analyzed insurance data for all 11,016 members who gave birth to singletons in 2000-2004, 208 of whom had HG.

Results: Prevalence of HG was 1.