Parkinson's disease

Overview

Parkinson's disease (PD) is a progressive neurological disorder characterized by motor symptoms such as tremors, rigidity, and slowed movement. Other symptoms may include cognitive impairment, mood changes, and sleep disturbances. PD is caused by the brain's loss of dopamine-producing neurons, leading to neurotransmitter imbalances.It develops gradually, often starting with a barely noticeable tremor in one hand. Over time, the tremor may spread and become more pronounced.The exact cause of Parkinson's disease is not fully understood, but both genetic and environmental factors are believed to play a role. Age is the most significant risk factor, with most cases occurring in individuals over 60.Early diagnosis and appropriate management of symptoms are crucial in improving the quality of life for individuals with Parkinson's disease. Treatment typically involves medication, physical therapy, and lifestyle modifications tailored to each individual's needs.While there is no known way to prevent Parkinson's disease, certain lifestyle factors may help reduce the risk or delay onset. These include regular exercise, maintaining a healthy diet rich in antioxidants, avoiding exposure to environmental toxins, and staying mentally and socially active.

Key Facts

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Symptoms

The symptoms of Parkinson's disease usually develop gradually and are mild at first. There are many different symptoms associated with Parkinson's disease, and the severity varies for each individual.

Some of the common symptoms of Parkinson's disease include:

  • Tremors (Shaking): These usually begin in the hand or arm and are more likely to occur when the limb is relaxed and resting.
  • Slowness of movement (bradykinesia): Physical movements are much slower than usual, making everyday tasks difficult, resulting in a shuffling walk with tiny steps.
  • Muscle stiffness (rigidity): Stiffness and tension in the muscles are common, making it challenging to move around and express emotions, often resulting in painful muscle cramps (dystonia).
  • Postural instability: Imbalance and changes in posture increase the risk of falls.

Parkinson's disease varies in its progression and symptoms. It often starts on one side of the body before affecting both sides. Other symptoms can be categorized into physical and cognitive/psychiatric symptoms:

Physical Symptoms

  • Loss of sense of smell
  • Drooling (excessive production of saliva)
  • Swallowing problems
  • Speech may become soft or quick with a slur or hesitation before talking
  • Excessive sweating
  • Balancing issues with a high risk of falls and injuries
  • Writing may become challenging and appear small
  • Blurred vision and dizziness while sitting
  • Insomnia or sleep disturbances
  • Rapid eye movement (REM) behavior disorder and restless legs syndrome
  • Constipation
  • Erectile dysfunction in men

Cognitive and Psychiatric Symptoms

  • Cognitive issues like memory loss, trouble concentrating, and changes in mood or behavior
  • Mental health disorders like anxiety and depression
  • Dementia – a group of symptoms, including more severe memory problems and personality changes

What is the difference between Alzheimer's, Dementia, and Parkinson's Dementia?

Alzheimer's disease is a specific type of dementia characterized by memory loss and cognitive decline. Dementia, however, is a broader category that includes many conditions where thinking and memory are affected. Parkinson's disease primarily involves movement-related symptoms but can also lead to Parkinson's Dementia, where movement problems accompany memory issues.

Early detection is crucial for better management and quality of life. Consult our specialists.

Cause

Parkinson's disease is caused by a loss of nerve cells that produce dopamine, which helps control body movements.

The loss of dopamine-producing cells directly interferes with the signals between the brain and muscles, causing a direct impact on movement coordination and balance.

RiskFactors

The various risk factors for Parkinson's disease include:

  • Age: Parkinson's disease usually begins in middle or late life, with the risk increasing as age advances. It typically develops in individuals aged 60 years or older.
  • Gender: Males appear to have a higher risk of developing Parkinson's disease compared to females.
  • Heredity: Individuals with a family history of Parkinson's disease are at a higher risk. Having a parent or sibling with Parkinson's increases the likelihood of developing the condition. However, the risks remain low unless multiple relatives have Parkinson's disease.
  • Exposure to certain toxins: Exposure to environmental toxins, such as pesticides, herbicides, and industrial pollutants, may elevate the risk.
  • Head injuries: A history of head injuries, particularly traumatic brain injuries, has been associated with a higher risk of Parkinson's disease.

Diagnosis

Currently, there isn't a specific test to diagnose Parkinson's disease. An accurate diagnosis of Parkinson's is based on examining the medical history, a review of the symptoms, and a neurological and physical examination.

Medical History

The doctor usually asks the person experiencing symptoms and a family member or friend questions about overall health, family history of Parkinson's disease, past medical problems, and ability to carry out daily activities. The history should include information related to the patient from the person.

Physical Examination

A doctor usually notices specific changes in the behavior and personality of the patient. A psychiatric evaluation is crucial to distinguish Parkinson's from other conditions that can mimic it, such as depression, delirium, and mild cognitive impairment.

Laboratory Tests

There are no lab or blood tests that can help the doctor diagnose whether an individual has Parkinson's. However, specific imaging tests may help the doctor rule out other diseases that could be causing the symptoms.

Imaging Tests

No imaging test is definitive for Parkinson's disease. However, the following imaging tests can aid in the diagnosis:

  • DaTscan: A DaTscan involves injecting a small amount of a radioactive drug, and a machine called a single-photon emission computed tomography (SPECT) scanner, similar to an MRI. The injected drug helps in assessing dopamine-containing nerve cells, which are involved in controlling movement.
  • L-Dopa Test: This test involves taking the medicine L-Dopa (Levodopa) to assess whether the symptoms improve. Rapid improvement is a sign of Parkinson's.

In the early stages, it's not easy to differentiate Parkinson's from other similar conditions. Computed tomography (CT) or Magnetic Resonance Imaging (MRI) scans are sometimes carried out, especially to rule out other diseases.

Quick Byte!

People often mix up Parkinson's disease with Parkinsonism. Parkinson's disease is a distinct neurological condition where cells in the brain that produce dopamine degenerate. On the other hand, Parkinsonism is a set of symptoms similar to Parkinson's, but it can stem from different causes like medication side effects or other neurological issues.

Prevention

There is no certain way to prevent Parkinson’s disease. However, incorporating preventive measures into your lifestyle can potentially reduce the risk or slow down its progression:

The following may have a lower risk of developing the condition:

  • Incorporate physical activity: Engage in regular exercise, including aerobic, strength training, and balance exercises.
  • Maintain a healthy diet: Eat a balanced and nutritious diet to support overall brain health.
  • Drink coffee or tea with caffeine: Consuming caffeinated beverages may reduce the risk of Parkinson's.
  • Avoid exposure to toxins: Limit contact with environmental toxins and pollutants.
  • Ensure quality sleep: Prioritize getting enough restful sleep each night.
  • Manage stress: Adopt stress-reducing techniques such as meditation, yoga, or deep-breathing exercises.
  • Stay mentally and socially active: Maintain an active social life and engage in stimulating activities like learning new languages, playing musical instruments, and gardening.

Treatment

Currently, there is no cure for Parkinson's disease, but the following treatment options are available to help relieve symptoms and maintain quality of life.

1. Medications

1. Oral Medications

  • Levodopa-Carbidopa: Most individuals with Parkinson's disease eventually need a medication called levodopa. Levodopa is absorbed by the nerve cells in the brain and converted into the chemical dopamine, which helps control movement. It is usually taken as a tablet or liquid and is often combined with other medications, such as benserazide or carbidopa. The initial dose is typically minimal and is gradually increased until the desired effect is achieved.
  • Dopamine Agonists: These medications act as substitutes for dopamine in the brain and have a similar but milder effect compared to levodopa. They are often taken as tablets but are also available as a skin patch (rotigotine). Examples include apomorphine, pramipexole, ropinirole, and rotigotine.
  • MAO-B Inhibitors: Drugs such as selegiline and rasagiline block the enzyme MAO-B, preserving dopamine. They may delay the need for levodopa therapy and enhance its effects.
  • COMT Inhibitors: Entacapone, opicapone, and tolcapone prevent the breakdown of dopamine, prolonging the effects of levodopa. These medications are usually prescribed for individuals in the later stages of Parkinson's disease.
  • Amantadine: This antiviral drug can alleviate symptoms of Parkinson's disease.
  • Anticholinergics: Medications such as trihexyphenidyl, benztropine, and ethopropazine decrease acetylcholine activity, helping to manage tremors.

2. Non-Oral Medications

When Parkinson's symptoms become difficult to control with oral tablets alone, several other treatments can be considered.

  • Apomorphine: Apomorphine, a dopamine agonist, can be injected under the skin (subcutaneously) either by single injection or continuous infusion.
  • Co-careldopa: For severe Parkinson's, a type of levodopa called co-carbidopa may be pumped continuously into the gut through a tube inserted through the abdominal wall.

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II. Surgery

Many cases of Parkinson's disease are treated with medications, but surgery may be recommended for severe cases.

HomeCare

Parkinson's disease (PD) can pose challenges to everyday tasks. Taking precautions and allowing ample time can simplify these routines and enhance safety. Below are some tips to facilitate these activities and ensure your well-being.

I. Safety Tips for Bathing, Grooming, and Toileting

Bathing:

  • Install handrails in bathtubs and shower stalls for support.
  • Use non-skid rubber bath mats to prevent falls.
  • Consider a tub rail for added safety when entering and exiting.
  • Install a shelf in the tub to avoid bending and reduce fall risk.

Grooming:

  • Sit while brushing teeth to prevent falls and conserve energy.
  • Opt for electric toothbrushes and razors to ease handling.

Toileting:

  • Use an elevated toilet seat or toilet frame for stability.
  • Limit caffeine intake to manage incontinence symptoms.
  • Control fluid intake before bedtime to reduce nighttime bathroom visits.
  • Consider stool softeners for regular bowel movements, avoiding bulk fiber laxatives.

II. Safety Tips for Home Accessibility

To ease movement in the home and ensure that your home is safe and easily accessible, follow these tips for regulating safety in your home for individuals with Parkinson’s:

Home Environment

  • Remove clutter to decrease tripping hazards.
  • Secure furniture and ensure adequate lighting throughout the house.
  • Create wide walking paths and consider wheelchair accessibility if needed.

Bedroom

  • Raise the height of the bed to enable feet to comfortably reach the floor while seated at the bedside.
  • Use a half-side rail or bed pole while getting up.
  • Use smooth carpets to have safe walking and minimize falls.
  • Keep a bedside commode or urinal accessible for nighttime use, if necessary.

Stairway

  • Keep the steps clutter-free.
  • Ensure there is adequate lighting on the staircase steps.
  • Install handrails on at least one side of the steps, positioning them two to three inches from the wall for a secure grip.

III. Nutritional Supplements

Brain-Boosting Foods

Consider adding pistachios, cashews, macadamia nuts, and Brazil nuts to your diet for potential brain health benefits. Incorporate these nuts into your diet and experience the difference.

Anti-inflammatory Foods

Incorporate coconut oil, rosemary, oily fish, and leafy greens to reduce inflammation and support brain health.

Omega-3 Fatty Acids

Omega-3s have anti-inflammatory effects that may help prevent cell degeneration associated with Parkinson's. Include sources like wild-caught fish, pastured eggs, and walnuts in your diet. You can augment your diet with supplements as well.

Antioxidant-Rich Foods

Antioxidants neutralize harmful free radicals, protecting healthy cells, including neurons. Consider adding blueberries, raspberries, and green tea to your diet.

Note: While diet won't cure Parkinson's, incorporating more antioxidants, fiber, and magnesium may help improve symptoms.

Complications

Parkinson's can cause the following complications as it worsens gradually:

  • Balance and falls: Reduced coordination and balance heighten the risk of falls, potentially leading to injuries and limited mobility.
  • Aspiration or choking: Trouble swallowing food can lead to aspiration or choking, resulting in lung pneumonia.
  • Dyskinesia: Involuntary and uncontrolled movements may arise as a long-term effect of Parkinson's medications.
  • Nutritional challenges: With advanced Parkinson's disease, a person may forget to eat and lose interest in eating, leading to various malnutrition-related problems.
  • Speech and swallowing challenges: Progression of the disease may cause speech difficulties, such as soft speech or slurring, alongside swallowing problems, increasing the risk of aspiration or choking.
  • Psychosis: Some individuals might encounter hallucinations or delusions, often as an outcome of medications used for Parkinson's treatment.
  • Depression: Recent studies estimate that at least 50% of people with Parkinson's disease will experience some form of depression during their journey.

AlternativeTherapies

The following alternative and complementary therapies should not replace medical advice and can be used as an adjunct to conventional medical care:

  • Acupuncture: This traditional Chinese practice involves the insertion of fine needles into specific body points, potentially alleviating symptoms like tremors and muscle stiffness associated with Parkinson's disease.
  • Massage Therapy: Therapeutic massages may help reduce muscle tension, improve blood flow, and promote relaxation, offering potential relief from Parkinson's symptoms.
  • Tai Chi: Similar to yoga, tai chi emphasizes gentle movements and breathing techniques, aiming to improve balance, muscle strength, and coordination.
  • Music and Art Therapy: Engagement in creative activities, music listening, or art therapy sessions may promote emotional well-being and potentially alleviate stress or depression often associated with Parkinson's.
  • Meditation: Practices involving meditation techniques may help manage stress, enhance mental clarity, and improve overall well-being.
  • Yoga: Regular yoga practice can enhance flexibility, balance, and posture, potentially benefiting individuals managing mobility issues linked to Parkinson's.

Living With Disease

Living with Parkinson's disease can affect quality of life through physical symptoms like tremors and mobility issues, emotional challenges such as anxiety and depression, social isolation, financial strain, and changes in independence and lifestyle. Here are strategies to begin living well with PD:

  • Medication management: Maintain regular communication with healthcare providers and adhere to medication schedules to optimize treatment effectiveness.
  • Seek emotional support: Engage in social activities, maintain open communication with loved ones, and seek emotional support through counseling or support groups to alleviate social and emotional difficulties.
  • Establish healthy habits: Prioritize nutrition, sleep, and emotional well-being to improve overall health.
  • Stay active and engaged: Engage in regular physical activity to manage PD symptoms. Utilize physical therapy, regular exercise, and assistive devices to manage motor symptoms and enhance mobility.
  • Maintaining independence: Adopt adaptive strategies, use assistive devices, and seek assistance from caregivers or professional care services to maintain independence for as long as possible. Devices such as grab bars or walking aids can make daily activities easier and increase independence.
  • Minimize stress from life: Engage in relaxing activities and stress management techniques to prevent stress escalation and improve well-being.
  • Lifestyle changes for more effortless living: Strategies like keeping essentials in the same place, automating bill payments, and maintaining a consistent schedule can help manage Parkinson-related memory loss.

Care Tips for Caregivers: Parkinson’s can be challenging for caregivers, as the person they are taking care of becomes more dependent and is unable to express their needs. Here are a few tips for them:

  • Keep the mood upbeat.
  • If the person becomes agitated, acknowledge those feelings.
  • Engage in activities for the person you care about on which you both can laugh and enjoy together.

Supportive therapies: Several supportive therapies can make living with Parkinson's disease easier and help the individual deal with the symptoms on a day-to-day basis.

  • Physiotherapy: A physiotherapist can work with you to relieve muscle stiffness and joint pain through movement and exercise, aiming to make movement easier and improve walking and flexibility.
  • Speech and language therapy: Many people with Parkinson's disease have swallowing difficulties (dysphagia). A speech and language therapist can often help in alleviating these problems by teaching speaking and swallowing exercises.
  • Occupational therapy: An occupational therapist can identify areas of difficulty in your day-to-day life, such as dressing yourself or going to the toilet. This can help to work out practical solutions and ensure the home is safe and properly set up for an individual.

References

Zafar S, Yaddanapudi SS
StatPearls [Internet]
2023 August 07
Kouli A, Torsney KM, Kuan WL
In: Stoker TB, Greenland JC, editors. Parkinson’s Disease: Pathogenesis and Clinical Aspects [Internet]
2018 December 21
World Health Organisation
2023 August
InformedHealth.org
Institute for Quality and Efficiency in Health Care (IQWiG)
2023 March 13
Armstrong MJ, Okun MS
JAMA
2020 February 11
Alzheimer’s Association
Parkinson’s Foundation
Gardner RC, Byers AL, Barnes DE, Li Y, Boscardin J, Yaffe K
Neurology
2018
Parkinson’s Foundation
InformedHealth.org
Institute for Quality and Efficiency in Health Care (IQWiG)
2023 March 13
National Institute of Neurological Disorders and Stroke
Parkinson’s Foundation
Parkinson’s Foundation
Parkinson’s NSW news

Frequently asked questions

There is no direct evidence linking stress to the onset of Parkinson's disease, but chronic stress may contribute to its development or worsen symptoms, warranting further research.
While primarily affecting movement, Parkinson's can also influence cognitive functions, particularly attention, rather than long-term memory, which is more associated with Alzheimer's.
Parkinson's disease does not directly shorten life expectancy, but advanced symptoms can increase the risk of fatal complications such as fractures, pneumonia, and choking.
Parkinson's disease is progressive and currently has no cure, but treatments and therapies can help manage symptoms and enhance quality of life.
Parkinson's dementia is a cognitive decline in individuals with Parkinson's disease, affecting memory, thinking, and reasoning.
Parkinson's disease can have a genetic component, but only a small percentage of cases are inherited; most are influenced by a mix of genetic and environmental factors.
Yes, vertigo and dizziness are common in individuals with Parkinson's, often presenting as a spinning sensation and balance issues.