The Sleep Disorders Research Center is one of the few well-equipped and advanced diagnostic, treatment and research centers for sleep disorders in Iran, which is located in Farabi Hospital, Kermanshah, in the west of Iran. This center is equipped with modern equipment to diagnose and evaluate all types of sleep disorders, including poly Somnography and actigraphy are for people suffering from disorders such as insomnia, hypersomnia, narcolepsy, sleep apnea, movement disorders during sleep, circadian rhythm disorder, sleep convulsions, sleep walking, and sleep panic disorder. Nightmare and other types of sleep disorders can refer to this center for accurate diagnostic evaluation and treatment.