What is Parkinson’s disease?

December 1, 2025

What Is Parkinson’s Disease? A Complete Guide by mr.hotsia

For more than 30 years, I have traveled across Thailand, Laos, Cambodia, Vietnam, Myanmar, India, and many other parts of Asia 🌏. Along these journeys, I have met thousands of people. Some were locals in small mountain villages, some were city workers in big Asian capitals, and many were travelers like me. Over the years, I spoke with people living with long term health conditions, including Parkinson’s disease. In some remote places of Laos or Myanmar, people told me they did not know the name of the disease, but they knew the symptoms. They described shaking hands, slow movement, stiff arms, tired walking, and changes in the voice. I realized that Parkinson’s disease affects people everywhere, regardless of culture or location.

As mr.hotsia, I have spent many days listening to stories while traveling through Asia, and this helped me understand how Parkinson’s disease touches lives across the region.
This article explains Parkinson’s disease in a simple and friendly way so that anyone can understand what it is, how it appears, and how it affects daily life.


What Is Parkinson’s Disease?

Parkinson’s disease is a chronic and progressive neurological disorder. It affects movement, coordination, and several parts of the nervous system. The disease begins when certain nerve cells in the brain gradually deteriorate. These nerve cells normally produce dopamine, a chemical used to send signals that allow smooth and controlled movement.

When dopamine levels drop, the brain loses its ability to coordinate movements properly. This creates the classical symptoms of Parkinson’s disease, such as shaking, stiffness, and slow movement.

Parkinson’s is not a short term condition. It develops slowly over many years. People may notice small signs at first, but symptoms usually progress with time.


Why Does Parkinson’s Happen?

Scientists still do not know the exact cause. There is no single reason. Instead, many factors may contribute to the development of the disease.

Possible causes include:

1. Age related brain changes

Most people diagnosed with Parkinson’s are over 60. Aging naturally affects dopamine producing cells.

2. Genetics

Around 10 to 15 percent of cases involve inherited genes. Some families have a higher risk.

3. Environmental toxins

Exposure to pesticides, chemicals, or metals may increase risk.
While traveling in rural farming areas in Thailand and Cambodia, I met farmers who experienced symptoms after years of working with chemicals.

4. Oxidative stress

Damage caused by free radicals may contribute to brain cell loss.

5. Inflammation in the brain

Chronic inflammation may play a role in cell deterioration.

However, for most people, the cause is unknown. This is called idiopathic Parkinson’s disease, the most common type.


Common Symptoms of Parkinson’s Disease

Parkinson’s symptoms vary from person to person. Some people progress slowly, while others progress more quickly. The symptoms can be divided into two main categories.


Motor Symptoms

These are symptoms that affect movement.

1. Tremor

Shaking or trembling, usually starting in one hand or one side of the body.
During my travels in Laos, I met an elderly man in a mountain village whose hand shook gently even when he was resting.

2. Slow Movement (Bradykinesia)

People move more slowly. Simple actions such as walking or buttoning a shirt take longer.

3. Muscle Stiffness

Muscles feel tight, heavy, or inflexible. This can make turning the body or lifting the arms difficult.

4. Balance Problems

Difficulty standing straight or maintaining balance.
This increases the risk of falls, especially for older adults.

5. Small or Shuffling Steps

Walking becomes slower, and steps may become short.


Non Motor Symptoms

Parkinson’s does not only affect movement. It also affects body systems controlled by the nervous system.

1. Loss of smell

One of the earliest signs. Some people notice they cannot smell food as clearly.

2. Sleep problems

Difficulty sleeping, waking often, or vivid dreams.

3. Constipation

A very common non motor symptom.

4. Depression or anxiety

Changes in brain chemistry affect emotions.

5. Fatigue

Constant tiredness is common.

6. Speech changes

Voice becomes softer, lower, or monotone.
In a small temple village in Myanmar, I spoke to a man whose voice had become very quiet because of Parkinson’s.

7. Cognitive changes

Memory or concentration problems may appear in later stages.


How Parkinson’s Disease Progresses

Parkinson’s disease is progressive, meaning it gets worse over time.
However, the speed of progression varies greatly.

Typical progression stages:

  1. Early stage
    Symptoms are mild. Tremor may appear in one hand. Movement becomes slightly slower.

  2. Middle stage
    Symptoms become more noticeable. Movement becomes more difficult. Balance problems appear.

  3. Advanced stage
    Daily activities require assistance. Stiffness increases. Non motor symptoms may become stronger.

Even though the disease progresses, many people continue to live meaningful and active lives for many years with proper treatment.


How Parkinson’s Affects Daily Life

I have met many people during my travels who live with Parkinson’s. They told me how the disease affects their daily routine.

Common challenges include:

  • Difficulty walking long distances

  • Challenges using hands for small tasks

  • Slow movement when getting out of bed

  • Tremors while eating

  • Fatigue during daily activities

  • Soft voice that is hard for others to hear

  • Stiffness in the morning

  • Emotional stress or worry about the future

Despite these challenges, many people remain strong. In Thailand, I met an elderly woman with Parkinson’s who still cooked for her family every day. She moved slowly but with determination.


Is Parkinson’s Curable?

At the moment, there is no cure for Parkinson’s disease.
However, modern treatments can manage symptoms effectively and improve quality of life.


Treatment Options

1. Medication

The most common and effective medicine is Levodopa (L-dopa).
It helps replace lost dopamine and improves movement.

Other medications help with:

  • Tremors

  • Muscle stiffness

  • Sleep problems

  • Mood symptoms

2. Physical Therapy

Movement therapy helps with flexibility, coordination, and muscle strength.

3. Speech Therapy

Helps improve voice volume and clarity.

4. Lifestyle Adjustments

Regular exercise, balanced diet, stress reduction, and good sleep are important.

5. Deep Brain Stimulation (DBS)

A surgical treatment for some patients.
An electrical device is placed in the brain to help control abnormal movements.

During my travels in Vietnam, I met a man whose father had DBS surgery and he told me it improved his father’s movement significantly.


Living With Parkinson’s

People with Parkinson’s can live long lives. With proper care, many continue to work, travel, enjoy hobbies, and stay active.

Helpful habits:

  • Daily walking

  • Stretching or yoga

  • Eating fresh vegetables and fruits

  • Drinking enough water

  • Staying socially connected

  • Practicing good sleep habits

During my journey across Asia, I saw how families support loved ones with Parkinson’s. Community support plays an important role in maintaining strength and positivity.


Risk Factors for Parkinson’s Disease

Some factors increase the likelihood of developing Parkinson’s.

1. Age

Risk increases after age 60.

2. Gender

Men have slightly higher risk.

3. Family history

Having a parent or sibling with Parkinson’s increases risk.

4. Exposure to toxins

Pesticides, chemicals, and heavy metals may increase risk.

5. Head injuries

Repeated trauma may contribute.


When to See a Doctor

Seek medical advice if you notice:

  • Tremors

  • Slow movement

  • Stiff muscles

  • Balance issues

  • Loss of smell

  • Soft or quiet voice

  • Constant fatigue

  • Mood changes

Early diagnosis helps manage symptoms more effectively.


10 FAQs About Parkinson’s Disease

1. What is Parkinson’s disease

A progressive neurological disorder that affects movement and dopamine producing cells.

2. What causes Parkinson’s disease

Age, genetics, environmental factors, and unknown causes.

3. What are the first symptoms

Tremor, slow movement, loss of smell, and constipation.

4. Is Parkinson’s curable

No, but treatments help manage symptoms.

5. Who gets Parkinson’s

Most commonly people over 60, especially men.

6. Does everyone with Parkinson’s shake

No. Some people have tremors, others do not.

7. Can exercise help

Yes. Exercise is one of the best ways to improve symptoms.

8. Is memory loss part of Parkinson’s

It can happen in later stages.

9. Can Parkinson’s progress slowly

Yes. Many people live for decades with mild symptoms.

10. What should families do

Provide support, understanding, and encourage regular medical care.

Mr.Hotsia

I’m Mr.Hotsia, sharing 30 years of travel experiences with readers worldwide. This review is based on my personal journey and what I’ve learned along the way. Learn more