Parkinson’s disease (PD) primarily affects movement by damaging brain cells producing dopamine, leading to tremors (shaking), rigidity (stiffness), slow movement (bradykinesia), and balance issues (postural instability). Beyond motor symptoms, it causes non-motor issues like sleep disorders, constipation, depression, anxiety, cognitive impairment, and loss of smell, impacting daily tasks, speech, and overall quality of life as it progresses.
