demi̇rkay, sevcan karakoç adnan menderes üniversitesi - tıp fakültesi - çocuk ve ergen ruh sağlığı ve hastalıkları anabilim dalı, Turkey , aksu, hatice adnan menderes üniversitesi - tıp fakültesi - çocuk ve ergen ruh sağlığı ve hastalıkları anabilim dalı, Turkey , taş, kutay adnan menderes üniversitesi - tıp fakültesi - çocuk ve ergen ruh sağlığı ve hastalıkları anabilim dalı, Turkey , özgür, börte gürbüz adnan menderes üniversitesi - tıp fakültesi - çocuk ve ergen ruh sağlığı ve hastalıkları anabilim dalı, Turkey

Evaluation of the relationship between the season of birth and neurodevelopmental psychiatric disorders

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Objective: There may be an association with the season of birth in the etiology of neurodevelopmental psychiatric disorders in which infections and deficiency of vitamin D play roles on the pathogenezis. Although there are discrepancies between the results in the literature, data about this association for our country is limited. Therefore we aim to assess the relationship between the season of birth and the childhood neurodevelopmental disorders including attention deficit hyper activity disorder (ADHD), tic disorders, obsessive compulsive disorder (OCD) and autism spectrum disorders (ASD). Methods: Medical charts of the cases who had admitted to the child and adolescent psychiatry outpatient clinic of the university hospital as a first referral in a one year duration, were assessed. The season of birth, birth timing, delivery type and the psychiatric diagnoses were evaluated retrospectively. Neurodevelopmental psychiatric group was composed of subjects with ADHD, ASD, OCD and tic disorders. Subjects in the control group were without any neurodevelopmental disorders and they had other diagnosis such as depression, anxiety, enuresis, encopresis and adaptational disorder. These two groups were compared for the season of birth. Results: Among total of 616 subjects; 29.2% (n=180) of them were girls and 70.8% (n=436) were boys. The most common seasons of birth were as following; summer (30.3%) for ADHD, winter (32.9%) for the ASD, spring (29%) for the tic disorders and winter (36.8%) for the OCD. There was no association between the diagnostic classes and the season of birth (p 0.05). Besides there was no association in the seasonality between neuropsychiatric disorders and control group (p 0.05). Conclusion: This study showed a neglectable association between the season of birth and the neurodevelopmental psychiatric disorders. Further studies on larger clinic population assesing the precipitating factors such as prenatal and perinatal risks, levels of vitamine D, maternal nutritional status are needed for the proper comparison of the impact of season of birth.

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Attention deficit hyperactivity disorder , autism , season of birth , neurodevelopmental psychiatric disorder

Medical Journal Of Suleyman Demirel University

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