Most people diagnosed with PD are age 60 years or older, however, an estimated 5 to 10 percent of people with PD are diagnosed before the age of 50. Approximately 500,000 Americans are diagnosed with PD, but given that many individuals go undiagnosed or are misdiagnosed the actual number is likely much higher.
Men are more likely to develop Parkinson's disease than women. Genetics. Individuals with a parent or sibling who is affected have approximately two times the chance of developing Parkinson's.
One clear risk is age: Although most people with Parkinson's first develop the disease after age 60, about 5% to 10% experience onset before the age of 50. Early-onset forms of Parkinson's are often, but not always, inherited, and some forms have been linked to specific alterations in genes.
However, one needs to consider that the lifetime risk for Parkinson's disease in the general population is 2%, so the risk of Parkinson's disease for the children of a patient is 4%, or twice the baseline risk for the general population.
Tremors, muscle stiffness and slowness of movement are all common early symptoms of Parkinson's – but there are also other signs to be aware of. Sleep and night-time problems are common in Parkinson's. People with Parkinson's are more likely to experience insomnia due to certain symptoms which can disrupt sleep.
It's possible for non-motor symptoms to start occurring up to a decade before any motor symptoms emerge. Years can pass before symptoms are obvious enough to make a person to go to the doctor.
Parkinson's disease is caused by a loss of nerve cells in the part of the brain called the substantia nigra. Nerve cells in this part of the brain are responsible for producing a chemical called dopamine.
It should be noted that the life expectancy of Parkinson's disease can be normal or near normal. However, a number of factors can shorten life expectancy. According to the Michael J. Fox Foundation for Parkinson's Research, patients usually live between 10 and 20 years after diagnosis.
It's not common to see Parkinson's disease in people younger than 50, but for a small subset of sufferers, the disease strikes early. While people are diagnosed with Parkinson's at an average age of 60, anything younger than 50 is considered young-onset Parkinson's, or YOPD.
Research suggests that stressful life events may increase the risk of Parkinson's disease. In addition, animal studies indicate that stress damages dopamine cells, resulting in more severe parkinsonian symptoms. In humans, acute stress can worsen motor symptoms, including bradykinesia, freezing, and tremor.
Prevention. Because the cause of Parkinson's is unknown, there are no proven ways to prevent the disease. Some research has shown that regular aerobic exercise might reduce the risk of Parkinson's disease.
PSP is often misdiagnosed as Parkinson's disease, especially early in the disorder, as they share many symptoms, including stiffness, movement difficulties, clumsiness, bradykinesia (slow movement), and rigidity of muscles. However, PSP progresses more rapidly than Parkinson's disease.
“Movement, especially exercises that encourage balance and reciprocal patterns [movements that require coordination of both sides of your body], can actually slow progression of the disease,” she says.
To diagnose Parkinson's, a doctor will take a neurological history and perform an in-office exam. Although there are no standard diagnostic tests, some doctors may order imaging testing to help confirm a PD diagnosis in the early stages of the disease.
If a person receives a diagnosis of Parkinson's disease before the age of 50 years, this is called early onset Parkinson's disease. The person may have the hallmark symptoms of tremor, rigidity, and slowness of movement, but confusion and balance problems are less likely than with a later diagnosis.
About 10 to 20 percent of people with Parkinson's experience symptoms before age 50, which is called "young onset." While treatments are the same, younger people may experience the disease differently. Scientists are working to understand the causes behind young-onset Parkinson's.
Some studies have reported that the average time from onset of Parkinson's to developing dementia is about 10 years. One large study found that about three-quarters of people who live with Parkinson's for more than 10 years will develop dementia.
However, some studies have identified cases where Parkinson's disease symptoms disappear. In one study, a 78-year-old man experienced a remission of all symptoms 16 years after his diagnosis. Although full remission is very rare, it can happen in some cases.
Parkinson's disease does not directly cause people to die, but the condition can place great strain on the body, and can make some people more vulnerable to serious and life-threatening infections. But with advances in treatment, most people with Parkinson's disease now have a normal or near-normal life expectancy.
Though mild to moderate alcohol use does not increase the risk of Parkinson's, heavy drinking may. People with Parkinson's may develop worsening associated symptoms, such as depression or sleep issues, when consuming alcohol. Another consideration is the use of medications to treat Parkinson's and alcohol.
Stage One. During this initial stage, the person has mild symptoms that generally do not interfere with daily activities. Tremor and other movement symptoms occur on one side of the body only. Changes in posture, walking and facial expressions occur.