What Is Parkinson’s Disease?
Parkinson’s disease is a progressive neurological condition that affects movement. It occurs when nerve cells in a part of the brain called the substantia nigra become damaged or die, leading to reduced levels of dopamine — a chemical messenger essential for smooth, coordinated movement.
It typically develops gradually, often starting with subtle symptoms that worsen over time. While it most commonly affects people over 60, younger-onset Parkinson’s can occur as well.
Common Symptoms
Motor symptoms:
- Tremor: Often starts in one hand, especially at rest
- Bradykinesia: Slowness of movement, making everyday tasks take longer
- Rigidity: Stiffness or resistance in the arms, legs, or trunk
- Postural instability: Balance problems, particularly in later stages
- Smaller handwriting, reduced facial expression, and a shuffling walk
Non-motor symptoms:
- Loss of sense of smell
- Sleep disturbances
- Constipation
- Mood changes, including depression or anxiety
- Cognitive changes in later stages
- Fatigue
Non-motor symptoms can appear years before movement problems become noticeable.
What Causes Parkinson’s Disease?
The exact cause isn’t fully understood, but it’s believed to involve acombination of:
- Genetic factors (a family history increases risk in some cases)
- Environmental exposures (such as certain toxins)
- Age, with risk increasing significantly after 60
- Abnormal clumping of a protein called alpha-synuclein in brain cells
Parkinson’s is not caused by anything a person did or didn’t do, and it isn’t contagious.
How Is It Diagnosed?
There’s no single definitive test for Parkinson’s. Diagnosis is primarily clinical, based on:
- Medical history and symptom review
- Neurological examination
- Response to Parkinson’s medications
- Imaging tests, sometimes used to rule out other conditions
Managing Parkinson’s Disease
While there is currently no cure, a range of treatments can help manage symptoms and maintain quality of life:
- Medications: Such as levodopa, which help replenish dopamine levels
- Physical, occupational, and speech therapy: To support movement, daily function, and communication
- Exercise: Regular physical activity can help with mobility, balance, and mood
- Surgical options: Such as deep brain stimulation, for select patients with advanced symptoms not fully controlled by medication
- Ongoing care: Regular follow-up with a neurologist to adjust treatment as the condition evolves
Living Well with Parkinson’s
Many people with Parkinson’s continue to live active, meaningful lives for years after diagnosis, especially with a strong care team, a supportive network, and a personalized treatment plan. Support groups and educationalresources can also help patients and families navigate the condition.