https://www.mayoclinic.org/diseases-conditions/parkinsons-disease/symptoms-causes/syc-20376055
Parkinson's disease is a progressive disorder that affects the nervous system and the parts of the body controlled by the nerves. Symptoms start slowly. The first symptom may be a barely noticeable tremor in just one hand. Tremors are common, but the disorder also may cause stiffness or slowing of movement.

https://my.clevelandclinic.org/health/diseases/8525-parkinsons-disease-an-overview
Parkinson's disease is a condition where a part of your brain deteriorates, causing more severe symptoms over time. While this condition is best known for how it affects muscle control, balance and movement, it can also cause a wide range of other effects on your senses, thinking ability, mental health and more. Advertisement.

https://www.nia.nih.gov/health/parkinsons-disease/parkinsons-disease-causes-symptoms-and-treatments
Learn about Parkinson's disease, a brain disorder that affects movement and causes tremor, stiffness, and slowness. Find out the possible causes, diagnosis, and treatments from the National Institute on Aging.

https://www.mayoclinic.org/diseases-conditions/parkinsons-disease/diagnosis-treatment/drc-20376062
Levodopa, the most effective Parkinson's disease medicine, is a natural chemical that passes into the brain and is converted to dopamine. Levodopa is combined with carbidopa (Lodosyn), which protects levodopa from early conversion to dopamine outside the brain. This prevents or lessens side effects such as nausea.

https://en.wikipedia.org/wiki/Parkinson%27s_disease
Learn about Parkinson's disease, a long-term neurodegenerative disorder that affects the motor and non-motor systems. Find out the symptoms, causes, diagnosis, treatment, and prognosis of this condition.

https://www.ninds.nih.gov/health-information/disorders/parkinsons-disease
Learn about the symptoms, causes, diagnosis, and treatment of PD, a movement disorder of the nervous system that gets worse over time. Find out how PD affects different aspects of life, such as mood, speech, swallowing, and sleep, and what are the latest updates on research and care.

https://www.parkinson.org/understanding-parkinsons/what-is-parkinsons
Parkinson's disease is a neurodegenerative disorder that affects dopamine-producing neurons in the brain and causes movement and non-movement symptoms. Learn about the causes, treatments, research and how to live well with PD from the Parkinson's Foundation.

https://www.webmd.com/parkinsons-disease/parkinsons-disease-overview
Parkinson's disease is a brain disorder that affects your movement and can cause tremors, rigidity, and slow movements. Learn how it's diagnosed, treated, and what to expect from this guide by WebMD.

https://www.webmd.com/parkinsons-disease/default.htm
Learn about Parkinson's disease, a brain disorder that affects movement and causes tremors, stiffness, and slowness. Find information on symptoms, stages, diagnosis, treatment, caregiving, and support.

https://www.who.int/news-room/fact-sheets/detail/parkinson-disease
Learn about the symptoms, causes, treatment and impact of Parkinson disease, a brain condition that affects movement and quality of life. Find out how WHO supports countries to improve diagnosis, care and prevention of this disorder.

https://www.healthline.com/health/parkinsons
Learn about Parkinson's disease, a progressive neurological disorder that affects movement and dopamine production. Find out the causes, risk factors, diagnosis, stages, and treatment options for this condition.

https://health.usnews.com/conditions/brain-disease/parkinsons-disease
The four primary symptoms of Parkinson's disease are: Tremor. Usually occurs when at rest and is a slow rhythmic shaking that typically starts in one hand, foot or leg and eventually affects

https://www.nia.nih.gov/health/parkinsons-disease
Parkinson's Disease: Causes, Symptoms, and Treatments. What is Parkinson's disease? Learn about causes, symptoms, diagnosis, and treatment of this brain disorder.

https://www.parkinson.org/library/fact-sheets/about-parkinsons
Learn about the symptoms, causes, diagnosis and treatment of Parkinson's disease, a chronic and progressive movement disorder that affects dopamine-producing cells in the brain. Find out how Parkinson's affects people differently and what resources are available for support.

https://www.webmd.com/parkinsons-disease/ss/slideshow-parkinsons-overview
Parkinson's disease is a brain disorder that gets worse over time. It causes nerve cells in a part of the brain called the substantia nigra to die. This part of the brain is important for

https://www.verywellhealth.com/parkinsons-disease-7151617
Learn about Parkinson's disease, a neurological disorder that affects movement and muscle function. Find out the early signs, risk factors, diagnosis, prevention, and treatment options for this condition.

https://www.hopkinsmedicine.org/health/conditions-and-diseases/parkinsons-disease
Learn about Parkinson's disease, a neurodegenerative disorder that affects motor abilities and brain cells. Find out about symptoms, causes, treatments, research and support from Johns Hopkins experts.

https://www.ncbi.nlm.nih.gov/books/NBK470193/
Parkinson disease is a neurodegenerative disorder that mostly presents in later life with generalized slowing of movements (bradykinesia) and at least one other symptom of resting tremor or rigidity. Other associated features are a loss of smell, sleep dysfunction, mood disorders, excess salivation, constipation, and excessive periodic limb movements in sleep (REM behavior disorder).[1][2][3]

https://www.parkinson.org/understanding-parkinsons
Learn about the symptoms, causes, diagnosis, and treatment of Parkinson's disease (PD), a movement disorder that affects millions of people. Find out how to live better with PD and access resources from the Parkinson's Foundation.

https://www.nhs.uk/conditions/parkinsons-disease/
Parkinson's disease is a condition that affects the brain and causes tremor, slow movement and stiff muscles. Learn about the symptoms, causes, diagnosis, treatment and outlook of this condition from the UK's National Health Service.

https://www.healthdirect.gov.au/parkinsons-disease
Learn about Parkinson's disease, a movement and mood disorder that affects dopamine production in the brain. Find out how it is diagnosed, treated and managed, and what resources and support are available.

https://www.apdaparkinson.org/what-is-parkinsons/causes/
Learn about the potential causes of Parkinson's disease, such as genetic factors, environmental exposures, and age. Find out how research is trying to find more answers and prevent or cure PD.

https://www.parkinson.org/understanding-parkinsons/10-early-signs
Learn how to recognize the most common symptoms of PD, such as tremor, handwriting changes, loss of smell, trouble sleeping and more. Find out what is normal and what is not, and what to do if you have more than one sign.