PUBLISHER: GlobalData | PRODUCT CODE: 1599071
PUBLISHER: GlobalData | PRODUCT CODE: 1599071
Parkinson's disease (PD) is an incurable neurodegenerative disease clinically categorized as a movement disorder with prominent motor symptoms, including tremors, rigidity, and bradykinesia (Hoehn and Yahr, 1967; Poewe et al., 2017). The clinical presentation of PD is characterized by postural instability, resting tremors, and gait problems that result from the progressive loss of A9 dopaminergic neurons in the substantia nigra pars compacta (Delic et al., 2020). PD is associated with motor symptoms involving bradykinesia, resting tremor, rigidity, and postural disturbances, as well as non-motor symptoms, including hyposmia, rapid eye movements, sleep behavior disorder, and depression (World Health Organization, 2023). PD is the second most common chronic progressive neurodegenerative disorder in the elderly, following Alzheimer's disease, and affects 1-2% of individuals ages 65 years and older worldwide (Mhyre et al., 2012; Kowal et al., 2013). At present, there are no blood or laboratory tests to diagnose non-genetic cases of PD. Diagnosis is primarily based on a patient's medical history and neurological examination. An additional hallmark that supports a PD diagnosis is a patient's improvement after starting medication. While current treatments provide symptomatic relief, there is still no therapy available to halt or slow the progression of the disease. Although a cure for PD remains elusive, existing treatments-such as medications, surgical interventions, and therapies like physiotherapy and occupational therapy-help manage key symptoms and preserve quality of life for as long as possible (National Health Service, 2022; National Institute on Aging, 2022).
In 2023, there were 2,636,930 diagnosed prevalent cases of PD among men and women ages 18 years and older across the 7MM. The US had the highest number of cases at 974,348, while Spain had the fewest, with 131,264 cases. Across the 7MM, the diagnosed prevalent cases of PD are projected to rise to 3,147,624 cases by 2033 at an annual growth rate (AGR) of 1.94% over the forecast period. This increase in the diagnosed prevalent cases of PD across the 7MM is primarily attributed to changes in the underlying population demographics, as GlobalData epidemiologists assumed a constant prevalence rate during the forecast period.