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Parkinson’s Disease

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Parkinson’s disease is a progressive neurological disorder that affects movement, balance and coordination. Over time, it can also affect mood, sleep and thinking abilities. 

If you or a loved one has noticed a tremor, increasing stiffness or slower movements that are not improving, it could be an early sign of Parkinson’s disease. Early diagnosis and treatment can help manage symptoms and improve quality of life. 

At Banner Health, our neurology and movement disorder specialists provide comprehensive Parkinson’s disease care — from early symptoms through advanced stages. 

What is Parkinson’s disease? 

Parkinson’s disease develops when nerve cells in the brain stop producing enough dopamine, a chemical messenger that helps control movement. 

As dopamine levels decline, people may experience tremor, stiffness and slowed movement. Parkinson’s disease is a chronic, progressive condition, meaning symptoms gradually worsen over time. 

Although there is no cure, treatment can significantly reduce symptoms and help people maintain independence. 

Causes and risk factors for Parkinson’s disease 

The exact cause of Parkinson’s disease is not fully understood. Experts believe it results from a combination of genetic and environmental factors. 

Risk factors may include: 

  • Age over 60 
  • Male sex 
  • Family history of Parkinson’s disease 
  • Exposure to pesticides, air pollution or certain solvents 
  • Repeated head injuries 

Having one or more risk factors does not mean you will develop Parkinson’s disease. Many people diagnosed have no clear single cause. 

Learn more about causes and risk factors. 

Symptoms, early signs and diagnosis of Parkinson’s disease 

Parkinson’s disease symptoms usually begin gradually and often start on one side of the body. 

Common motor symptoms 

  • Tremor (shaking), often in one hand 
  • Muscle stiffness (rigidity) 
  • Slowed movement (bradykinesia) 
  • Balance problems 
  • Changes in posture 
  • Smaller handwriting 
  • Softer voice 
  • Reduced facial expression 

Non-motor symptoms 

Parkinson’s can also cause: 

  • Sleep disturbances 
  • Depression or anxiety 
  • Constipation 
  • Loss of sense of smell 
  • Memory or cognitive changes 

Because symptoms can overlap with other neurological conditions, evaluation by a specialist is important. 

Diagnosis typically involves: 

  • A neurological exam 
  • Review of medical history 
  • Assessment of movement patterns 
  • Imaging tests to rule out other conditions 

Learn more about symptoms, signs and diagnosis. 

Stages of Parkinson’s disease 

Parkinson’s disease progresses gradually and is often grouped into five stages based on how symptoms affect daily life. 

Stage 1: Mild symptoms 

Symptoms affect one side of the body. Daily activities remain manageable. 

Stage 2: Bilateral symptoms 

Both sides of the body are affected. Posture and walking may change. 

Stage 3: Mid-stage Parkinson’s 

Balance problems develop. Falls may occur. Tasks take longer to complete. 

Stage 4: Advanced symptoms 

Walking and standing become more difficult. Assistance may be needed for daily activities. 

Stage 5: Severe disability 

Mobility is severely limited. Full-time assistance may be required. Cognitive changes may become more noticeable. 

Progression varies from person to person. Some people experience slow changes over many years, while others may progress more quickly. 

Treatment and care for Parkinson’s disease 

While there is no cure for Parkinson’s disease, treatment focuses on managing symptoms and improving quality of life. 

Treatment options may include: 

  • Medications that increase or mimic dopamine 
  • Physical therapy 
  • Occupational therapy 
  • Speech therapy 
  • Lifestyle adjustments 
  • Advanced therapies for later stages 

Early treatment can help improve symptom control and support long-term independence. 

Learn more about treatment and care. 

Living with Parkinson’s disease 

Living with Parkinson’s disease requires ongoing support and coordinated care. With the right treatment plan and care team, many people continue to live active and meaningful lives. 

Support may include: 

  • Movement disorder specialists 
  • Rehabilitation programs 
  • Mental health support 
  • Caregiver resources 
  • Community programs 

Learn more about living with Parkinson’s disease. 

Specialized Parkinson’s disease care at Banner Health 

Banner Health offers specialized movement disorder clinics at: 

Our teams provide: 

  • Advanced neurological evaluation 
  • Personalized treatment plans 
  • Access to innovative therapies 
  • Coordinated long-term care 

If you or a loved one are experiencing symptoms of Parkinson’s disease, schedule an appointment with a Banner Health neurology specialist.