14/04/2026
We hope you will find this useful.
Medicine didn’t choose Latin to be pretentious. It chose Latin because it’s dead.
Dead languages don’t change. That matters when you’re trying to describe the same muscle, nerve, or symptom the same way in Boston, Berlin, or Bangalore without it mutating into slang or vibes. Latin became the neutral ground. No country “owns” it. No modern culture updates it.
There’s also history. Early medical education in Europe was conducted in Latin, so the words stuck. Anatomy, pathology, pharmacology. Once something works in science, it stays.
So when Parkinson’s care throws Latin and Greek at you, it’s not to exclude you. It just accidentally does that anyway.
Here is Parkinson’s Disease Glossary in plain language. No white coat required.
Akinesia
Difficulty initiating movement. Not paralysis. Almost like your brain sent the email and your body never opened it.
Alpha-synuclein
A protein that misfolds and clumps in Parkinson’s. These clumps interfere with brain cell function.
Anosmia
Loss of smell. Often shows up years before diagnosis.
Autonomic Dysfunction
When the automatic stuff stops being automatic. Blood pressure, digestion, sweating, temperature regulation. Your body forgets how to run itself quietly.
Bradykinesia
Slowness of movement. Core Parkinson’s symptom. Not laziness or aging.
Cogwheel Rigidity
A ratcheting resistance when a limb is moved passively. Feels like turning a rusty gear.
Dopamine
A neurotransmitter involved in movement, motivation, mood, and reward. Parkinson’s is fundamentally a dopamine-deficiency disorder.
Dyskinesia
Involuntary movements, often medication-induced.
Executive Dysfunction
Difficulty planning, organizing, multitasking, or initiating tasks. You still know what you want to do, but it's difficult to line up the steps.
Freezing of Gait
Sudden inability to move your feet, often mid-step. The brain hits pause without warning.
Hypophonia
Soft or fading voice. People think you’re shy or tired. You’re actually working twice as hard to be heard.
Lewy Bodies
Abnormal protein deposits inside brain cells, primarily made of alpha-synuclein.
Masked Facies
Reduced facial expression. Emotions are still there, but the face does not reflect them.
Micrographia
Progressively smaller handwriting. Shows up early. Often dismissed as “pen issues” or “getting older” when it is neither.
Motor Fluctuations
Cycles of medication working (“on”) and not working (“off”). You don’t control the timing.
Non-Motor Symptoms
Anxiety, depression, sleep disorders, pain, fatigue, cognitive changes, GI issues. Often more disabling than tremor.
Orthostatic Hypotension
Drop in blood pressure when standing. Dizziness, blackouts, falls.
Parkinsonism
An umbrella term for conditions that look like Parkinson’s but may not be Parkinson’s disease itself. Similar symptoms, different causes.
REM Sleep Behavior Disorder (RBD)
Acting out dreams during REM sleep. Can precede diagnosis by years.
Rigidity
Muscle stiffness independent of movement speed. Not soreness or tightness, but resistance.
Tremor
Rhythmic shaking, usually at rest. Not universal. Not required for diagnosis. Just the symptom everyone recognizes.
Young-Onset Parkinson’s Disease (YOPD)
Parkinson’s diagnosed before age 50. Often slower progression. Often heavier psychosocial impact.
Learning these terms makes you fluent.
Vocabulary shouldn’t be one of the things Parkinson's keeps from you.
