Related Experiment Video
Updated: Jul 14, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
Published on: December 9, 2015
The seasonality of mania: Preliminary findings
F A Abdul-Rahim1, A Al-Sabai, A R Al-Hamad
1Department of Psychiatry, College of Medicine, King Saud University, Department of Psychiatry, King Khalid University Hospital, and Department of Community and Family Medicine, King Saud University, Riyadh, Saudi Arabia.
Abstract:
The relationship between climatic variables and monthly manic admissions to a teaching hospital in Riyadh, Saudi Arabia was examined over a six-year period. The results indicate a weak but significant correlation between monthly admission rates of mania and day length, humidity, air pressure, and temperature. The correlation did not seem, however, to be strong enough to indicate a seasonal trend. Also, current month climatic variablesare better correlated than previous months. The prevalence of sunshine throughout the year may explain the low correlation with mania admissions unlike reports from other countries.
More Related Videos
Related Concept Videos
Bipolar Disorder
Mania and Antimanic Drugs: Overview
Depressive Disorders: Etiology
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...
Depressive Disorders: MDD and Dysthymia
Cause and Effect
Biological Clocks and Seasonal Responses
