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[P-28-05]ASD characteristics in adults with ADHD

*Shizuka Seki1, Hiroaki Ishii1, Hirohisa Suzuki1, Dan Nakamura1, Yoshihumi Nakamura1, Miho Imai2, Takeru Mizuno2, Kenji Sanada1, Akira Iwanami1 (1.Department of Psychiatry, Showa University, School of Medicine(Japan), 2.Karasuyama Hospital of Showa University(Japan))
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Keywords:

Attention-deficit hyperactivity disorder,Autism Spectrum Disorder,Employment rates

ADHD (attention-deficit hyperactivity disorder) is a developmental disorder characterized by inattention, hyperactivity, and impulsivity. Long-term studies focusing on children with ADHD have shown that symptoms generally persist into adulthood, albeit to varying degrees, and in recent years, the number of adults seeking treatment for ADHD has been increasing. The prevalence of ADHD is reported to be as high as 4% in adults, making it one of the most common mental disorders in adulthood. It has garnered significant attention both in the medical field and in society at large. In ADHD, cases involving difficulties in interpersonal relationships and communication are not uncommon. These can be divided into two types: those who exhibit ASD-like characteristics from birth and those in whom interpersonal difficulties become prominent around puberty. The present study focused on ASD characteristics in adult ADHD and examined their association with subject background and ADHD symptoms. The participants were adults with ADHD who visited the ADHD specialty clinic at Showa University Karasuyama Hospital. A total of 146 participants (81 males and 65 females, mean age 32.4, SD 10.1 years) were analyzed. Compared to the low AQ group (74 cases), the high AQ group (72 cases) showed statistically significant higher scores on the CAARS inattention/memory problems, self-concept problems, DSM-IV hyperactivity/impulsivity symptoms, DSM-IV combined ADHD symptoms, and ADHD indices. However, no statistically significant differences were observed in employment rates. Additionally, when evaluating the correlation between employment rates and AQ and CAARS, significant correlations were found with several CAARS indices. These results suggest that ADHD symptoms are strongly associated with living conditions in ADHD, but that ASD symptoms in ADHD are likely to be secondary symptoms.