In the fourth lecture of the KAPS exam preparation course, we will explore seizure disorders and the pharmacological agents acting on the central nervous system (CNS). This session will cover the classification, etiology, and management of various seizure disorders. Additionally, we will examine CNS depressants and stimulants, discussing their mechanisms of action, therapeutic uses, and potential side effects. This lecture is crucial for those preparing for the KAPS exam, providing in-depth knowledge essential for understanding and managing conditions related to CNS pharmacology.