Parkinson's Disease
Parkinson's Disease (PD) is a progressive neurodegenerative disorder primarily affecting dopamine-producing neurons in a specific area of the brain called the substantia nigra. Its cardinal motor symptoms include tremor, bradykinesia (slowness of movement), rigidity, and postural instability. Non-motor symptoms such as sleep disturbances, cognitive impairment, and mood disorders are also common. The exact cause is unknown, but it involves a combination of genetic and environmental factors. Management focuses on symptom control through medication, therapies, and lifestyle adjustments.