IGHE and Abnormal emotional state: Thus, the aim of this epidemiological study was to investigate whether demographics, lifestyles, and comorbidities were associated with SBS or MCS among a relatively young child-bearing Japanese population, and to investigate whether autistic traits (Japanese version of the Autism-Spectrum Quotient short form, AQ-10-J) [19], psychological distress (the Japanese version of the Kessler 6-Item Psychological Distress Scale, K6) [20], and serum total and allergen-specific immunoglobulin E (IgE) levels were associated with SBS or MCS.