CENTRAL NERVOUS SYSTEM DISORDERS. Febrile Seizures Definition: Febrile seizures are seizures occurring in children aged 6 months to 5 years, associated with fever (>38°C) without any underlying CNS infection or metabolic disorder. Types of Febrile Seizures: Causes & Risk Factors: Signs & Symptoms: Complications: Diagnosis: Management: Meningitis Definition: Meningitis is inflammation of the meninges, often caused by bacterial or viral infections. Types: Signs & Symptoms: Complications: Diagnosis: Management: Guillain-Barré Syndrome