Progressive nervous system disorder affecting movement. Review possible symptoms, contributing factors, assessment, warning signs and care options.
About Parkinson's Disease
Progressive nervous system disorder affecting movement
Parkinson's disease is a progressive disorder that affects movement, often causing tremors, stiffness, and difficulty with balance and coordination.
It develops gradually, sometimes starting with a barely noticeable tremor in one hand.
Editorial update (28 September 2026): structured medical content awaits clinical reviewer sign-off.
How assessment may be approached
A clinician may review symptom onset, progression, weakness, sensation, vision, speech, cognition, balance and medicines. Neurological examination and selected imaging or laboratory tests may be used when indicated.
Care depends on the diagnosis and may involve medicines, rehabilitation, lifestyle support, monitoring or specialist review. Ask which findings were reassuring and which need urgent review.
When to seek prompt care
Seek emergency care for one-sided weakness, speech or face changes, sudden severe headache, seizure, fainting, new confusion, loss of vision, severe balance problems or rapidly progressing weakness.
Symptoms
- Tremor
- Slowed movement (bradykinesia)
- Rigid muscles
- Impaired posture and balance
- Speech changes
Possible causes
- Genetic factors
- Environmental triggers
- Age-related changes
- Loss of dopamine-producing neurons
Care and treatment options
- Medications (carbidopa-levodopa)
- Deep brain stimulation
- Physical therapy
- Occupational therapy
- Speech therapy
Key points
- Affects 1 million Americans
- Usually diagnosed after 60
- Cannot be cured but treated
- Progressive but manageable
Preparing for a consultation
- Exact symptom start, suddenness, progression and triggers.
- Weakness, sensation, speech, vision, balance or memory changes.
- Medicines, recent illness, injury and family history.
- Prior scans, test reports and current function.
Questions worth asking
- Is Parkinson's Disease the most likely explanation for these symptoms, and what alternatives should be checked?
- Which symptoms or findings would require urgent review?
- Are medicines, underlying health problems or lifestyle factors contributing?
- What tests or examinations are needed now, and what can safely wait?
- What treatment or self-care options are reasonable, and when should I be reviewed again?
- What is the expected benefit, limit, cost and follow-up plan for the suggested care?
Related conditions
Related clinicians
Medical information limitations
This page summarizes listed condition information and cannot confirm a diagnosis or choose treatment. Do not start, stop or change prescribed treatment based only on this page.
Common questions
What is Parkinson's Disease?
Progressive nervous system disorder affecting movement This is general information; the name describes a possible diagnosis or clinical problem, not a personal diagnosis.
How might a clinician assess Parkinson's Disease?
A clinician may review symptom onset, progression, weakness, sensation, vision, speech, cognition, balance and medicines. Neurological examination and selected imaging or laboratory tests may be used when indicated.
What care may be discussed?
Care options listed include Medications (carbidopa-levodopa), Deep brain stimulation, Physical therapy, Occupational therapy. Which option is appropriate depends on the confirmed cause, severity, preferences and contraindications.
When should Parkinson's Disease be checked urgently?
Seek emergency care for one-sided weakness, speech or face changes, sudden severe headache, seizure, fainting, new confusion, loss of vision, severe balance problems or rapidly progressing weakness.
How should I prepare for a consultation?
Exact symptom start, suddenness, progression and triggers. Weakness, sensation, speech, vision, balance or memory changes. Medicines, recent illness, injury and family history. Prior scans, test reports and current function. Bring previous reports and a current medicine list where relevant.
Can this page diagnose or treat the condition?
No. A page about Parkinson's Disease can help you understand possible features and questions, but it cannot confirm a diagnosis or choose treatment. A qualified clinician should assess your symptoms, history and any test results.
General information only; it is not a diagnosis or a substitute for a qualified clinician’s advice.