What is parkinson's disease?
Parkinson's disease develops when nerve cells in a part of the brain called the substantia nigra are gradually lost, reducing dopamine — a chemical essential for smooth, coordinated movement. The classic features are tremor at rest, muscle stiffness and slowness of movement, but non-motor symptoms such as sleep disturbance, constipation, low mood and loss of smell are also common and may appear years earlier.
Around 153,000 people in the UK live with Parkinson's, most diagnosed over the age of 60, though younger-onset disease occurs. Diagnosis is clinical, made by a neurologist or elderly care specialist based on your symptoms and examination; there is no single confirmatory blood test, although a DaT brain scan is occasionally used when the diagnosis is uncertain.
Common symptoms
- Tremor, usually starting in one hand at rest
- Slowness of movement (bradykinesia)
- Muscle stiffness and rigidity
- Smaller handwriting than before
- Stooped posture or shuffling walk
- Reduced sense of smell
- Sleep disturbance and vivid dreams
How long will you wait?
Routine NHS referrals to a neurologist or movement disorder clinic commonly take four to eight months, which can feel long when symptoms are unexplained and worrying.
Privately, you can typically see a consultant neurologist or movement disorder specialist within 3–7 days.
NHS England median referral-to-treatment wait: 12.4 weeks, with 2.5 million people waiting over 18 weeks (May 2026). Individual waits vary by trust and urgency.
Treatment options
- Levodopa-based medication. The most effective symptomatic treatment, replacing dopamine to improve movement.
- Dopamine agonists and other drugs. Alternative or additional medicines tailored to age, symptoms and side-effect profile.
- Physiotherapy and exercise. Structured exercise is one of the best-evidenced ways to maintain mobility, balance and wellbeing.
- Speech and occupational therapy. Support for voice, swallowing and everyday tasks as the condition evolves.
- Deep brain stimulation. A surgical option for selected people whose symptoms fluctuate despite optimised medication.
What does private treatment cost?
As a guide, a private consultation costs around £250–£400; a DaT scan, if needed to clarify the diagnosis, costs around £1,500–£2,500.
Does health insurance cover parkinson's disease?
Private medical insurance will usually cover the consultations and any scans needed to establish whether symptoms are due to Parkinson's. Once diagnosed, Parkinson's is treated as a chronic condition, so ongoing specialist reviews, long-term medication and therapy are generally not covered and care usually continues under the NHS. Some policies contribute to acute complications or inpatient episodes, so check your terms.
Frequently asked questions
Is a tremor always Parkinson's?
No — most tremors are not Parkinson's. Essential tremor, which typically affects both hands during action rather than at rest, is considerably more common, and thyroid problems, medication side effects and anxiety can all cause tremor. A specialist can usually distinguish these on examination, which is why early assessment is valuable when a tremor is causing concern.
How quickly does Parkinson's progress?
Progression is usually gradual and varies enormously between individuals. Many people remain independent and active for years or decades after diagnosis, particularly with well-adjusted medication and regular exercise, which has genuine disease-relevant benefits. Your specialist team will review you regularly and adapt treatment as your needs change, rather than following a fixed timetable.
What is the benefit of seeing a specialist quickly?
Unexplained tremor or slowing is frightening, and a prompt expert opinion either provides reassurance or allows treatment to start early. Parkinson's medication can markedly improve day-to-day function, and early referral to physiotherapy and exercise programmes helps preserve mobility. NICE guidance recommends people with suspected Parkinson's be seen by a specialist before treatment is started.