Parkinson's & Movement Disorders

No. The most common tremor condition is essential tremor — which is often hereditary, occurs during action (holding a cup, writing) rather than at rest, and is not associated with Parkinson's. Parkinson's tremor is characteristically a resting tremor — the hand shakes when relaxed and stops when reaching for something. Other tremor causes include thyroid disorders, medication side effects (lithium, valproate, some antidepressants), caffeine excess, anxiety, and cerebellar disease. Age-related tremor is also common. A neurologist can distinguish these through examination and, when needed, a DaTscan (dopamine transporter imaging). Not every shaky hand needs levodopa.

Motor symptoms (tremor, slowness, stiffness) are preceded by non-motor symptoms years earlier: loss of smell (anosmia) — often dismissed, REM sleep behaviour disorder (acting out dreams physically while asleep — a spouse may notice this), constipation that is unusually persistent, depression or anxiety without clear cause, and small handwriting (micrographia). By the time tremor appears, significant dopamine cell loss has already occurred. Research into these prodromal (pre-motor) signs is active — future neuroprotective treatments, when available, would ideally be started at this early stage. Currently, there is no proven treatment to slow or stop progression, though exercise has the strongest evidence for slowing functional decline.

Levodopa (combined with carbidopa to reduce side effects) remains the most effective Parkinson's medication after 50+ years. It replaces the dopamine that is no longer being produced. Other medications — dopamine agonists (pramipexole, ropinirole), MAO-B inhibitors (rasagiline, selegiline), COMT inhibitors — are used alone in early disease or combined with levodopa as disease progresses. Over time, levodopa's effect wears off faster between doses (wearing-off) and involuntary movements (dyskinesias) can develop — medication adjustments, more frequent dosing, or extended-release formulations help. Deep brain stimulation (DBS) — a surgically implanted electrode that modulates brain circuits — provides excellent relief for motor fluctuations in suitable patients and is available at specialised Indian centres.

Yes — exercise is currently the most evidence-supported intervention for slowing functional decline in Parkinson's, beyond medications. Regular aerobic exercise, strength training, balance work, and specifically Parkinson's-targeted programmes (boxing, tango dance, tai chi, cycling on tandem bikes) have all shown benefits in clinical trials — improving gait, balance, mood, and cognitive function. Some animal studies suggest exercise may even slow neurodegeneration, though this hasn't been proven in humans. In India, access to Parkinson's-specific physiotherapy is limited outside metros, but general aerobic exercise and yoga adapted for balance are practical alternatives. The evidence is strong enough that most movement disorder specialists consider exercise as important as medication.

Deep brain stimulation (DBS) involves surgically implanting electrodes in specific brain targets (subthalamic nucleus or globus pallidus), connected to a battery device under the collarbone, that delivers continuous electrical impulses to modulate abnormal circuit activity. It does not cure Parkinson's or stop progression but dramatically reduces motor fluctuations, wearing-off, and dyskinesias — often halving the time spent in the 'off' state. It's most suitable for people who respond well to levodopa but have significant wearing-off or dyskinesias, have no major cognitive impairment, are in reasonable health for surgery, and have realistic expectations. DBS does not help tremor-dominant patients who don't respond to levodopa, or those with significant dementia. It is available at major neurosurgery centres in India (NIMHANS, AIIMS, major private hospitals).