Medically reviewed by Dr. Sarim Mir, board-certified neurologist at Mir Neurology. Last reviewed: October 2026.
Parkinson’s disease usually starts slowly, and its earliest signs are easy to blame on aging, stress, or a bad night’s sleep. Some changes — like a reduced sense of smell or acting out dreams — can appear years before the classic tremor. Knowing the early signs of Parkinson’s helps you get evaluated sooner, start treatment earlier, and plan ahead. Here are 10 early signs to watch for, based on guidance from the Parkinson’s Foundation and our neurologists’ experience.
Key takeaways
- One sign alone rarely means Parkinson’s. Several signs together, especially getting worse over time, are worth a neurology visit.
- Early signs can be motor (tremor, small handwriting, stiffness) or non-motor (loss of smell, sleep changes, constipation).
- There is no single blood test. Diagnosis is based on a neurologist’s history and exam.
10 early signs of Parkinson’s disease
1. Tremor or shaking at rest
A slight shaking in a finger, thumb, hand, or chin while the body is relaxed is the best-known sign. A Parkinson’s tremor usually starts on one side and often eases when you use that hand. Shaking after exercise, from caffeine, or from some medications is common and usually not Parkinson’s.
2. Smaller handwriting
Handwriting that becomes smaller and more crowded (called micrographia) is a classic early clue, especially if words get smaller across a line.
3. Loss of smell
Trouble smelling foods like bananas, pickles, or licorice can appear years before movement symptoms. A cold or sinus problem can also reduce smell, so it matters most when it doesn’t come back.
4. Trouble sleeping or acting out dreams
Kicking, punching, or shouting during sleep (REM sleep behavior disorder) can be an early warning sign. Ask a bed partner whether you move a lot during dreams.
5. Stiffness or trouble moving and walking
Stiffness in the arms, legs, or shoulders that doesn’t go away with movement, a shorter stride, shuffling, or less arm swing on one side can all be early signs.
6. Constipation
Ongoing straining to move your bowels, without another cause like diet or medication, is a common non-motor sign.
7. A soft or low voice
Family members may say you speak more quietly or sound hoarse, even though you feel you’re speaking normally.
8. Masked face
A serious, blank, or “masked” expression, even when you’re not upset, and blinking less often can be early signs.
9. Dizziness or fainting when standing
Feeling lightheaded when you stand up can be caused by a drop in blood pressure linked to Parkinson’s, though it has many other causes too.
10. Stooping or hunching over
Gradually leaning or slouching more when you stand can be an early posture change.
What is usually the first symptom of Parkinson’s?
For many people the first noticeable symptom is a resting tremor in one hand. But non-motor symptoms such as loss of smell, constipation, and acting out dreams often start earlier — people just don’t connect them to Parkinson’s until movement symptoms appear.
What are the four cardinal signs of Parkinson’s?
Neurologists look for four main motor features:
- Tremor at rest
- Bradykinesia (slowness of movement) — required for diagnosis
- Rigidity (stiffness)
- Postural instability (balance problems), which usually comes later
What is the finger tapping test for Parkinson’s?
During an exam, a neurologist may ask you to tap your index finger and thumb together quickly and widely, over and over. In Parkinson’s, the taps often become smaller and slower over time, or pause. This is one of several bedside tests used to check for bradykinesia. It is not a home test — many conditions can affect it, so it should be interpreted by a clinician.
At what age does Parkinson’s start?
Most people are diagnosed around age 60 or older. About 4% of people with Parkinson’s are diagnosed before age 50 (young-onset Parkinson’s). Nearly one million people in the U.S. live with Parkinson’s disease.
Is it Parkinson’s or essential tremor?
Many people with shaky hands have essential tremor, not Parkinson’s. Essential tremor usually happens when you use your hands (holding a cup, writing) and affects both sides, while a Parkinson’s tremor is usually at rest and starts on one side. Read our comparison of essential tremor vs. Parkinson’s or learn about our tremor evaluation.
How Parkinson’s is diagnosed
There is no single blood test for Parkinson’s. A neurologist makes the diagnosis from your history and a detailed neurological exam. In some cases, tests such as a DaTscan (a brain imaging scan) or other studies help rule out conditions that look similar. Our movement disorder specialists can make the distinction.
Why early diagnosis helps
Parkinson’s can’t be cured yet, but early diagnosis lets you start treatment that controls symptoms, begin exercise programs that help mobility, and plan ahead. Researchers are also studying new treatments — see our update on tavapadon, a new Parkinson’s pill.
When to see a neurologist
Make an appointment if you notice two or more of these signs, if a sign is getting worse, or if family members notice changes in your movement, voice, or expression. Mir Neurology evaluates and treats Parkinson’s disease in Hagerstown and Cumberland, MD. Book an appointment or call (301) 797-7600.
Frequently asked questions
What are the first signs of Parkinson’s?
Common early signs are a resting tremor in one hand, smaller handwriting, loss of smell, acting out dreams, stiffness, slower walking, constipation, a softer voice, and a masked facial expression.
What is usually the first symptom of Parkinson’s disease?
A resting tremor in one hand is often the first noticeable symptom, but non-motor signs like loss of smell and acting out dreams can start years earlier.
What are the four cardinal signs of Parkinson’s disease?
Tremor at rest, slowness of movement (bradykinesia), stiffness (rigidity), and balance problems (postural instability).
At what age does Parkinson’s usually start?
Most people are diagnosed around age 60 or older; about 4% are diagnosed before age 50.
Is a tremor always Parkinson’s?
No. Essential tremor is more common and usually happens during movement, while Parkinson’s tremor usually happens at rest. A neurologist can tell them apart.
Sources: Parkinson’s Foundation – 10 Early Signs; NINDS – Parkinson’s Disease.
Need to talk to a neurologist about this?
Mir Neurology offers same-week appointments in Hagerstown & Cumberland, MD. No referral needed for most plans.
