Tremors, especially at restSlowness of movement (bradykinesia)Muscle stiffnessBalance and posture problemsChanges in speech or handwriting Levodopa-Carbidopa: Replenishes dopamine in the brain to improve motor function.Deep Brain Stimulation (DBS): Surgical device implantation that regulates abnormal brain activity.Physical and Occupational Therapy: Improves strength, coordination, and quality of life. Degeneration of dopamine-producing neurons in the brainGenetic factors in some casesEnvironmental triggers (toxins, head injury)