It is possible to have Parkinson's disease for some time without knowing, as it is a progressive disorder that develops slowly over time. The rate of progression is different for each person, so the amount of time someone can have the disease without knowing can vary.
Early symptoms of Parkinson's disease can be subtle and may include difficulty with balance, coordination, and writing. Many people also experience depression, anxiety, tremor, and changes in movement, such as shuffling gait, slowed movement, and difficulty initiating movement. As the disease progresses, symptoms can become more pronounced and include muscle weakness, rigidity, and tremors.
In some cases, symptoms may appear so gradually that it may take some time before an individual is aware of them. It is estimated that, on average, people have Parkinson's disease for approximately four to six years before diagnosis. Diagnosis is typically based on a physical examination, medical history, and laboratory tests.
It is important to speak with a doctor if you have any concerns about changes in movement, balance, or coordination, as early diagnosis and treatment can help to manage symptoms and slow the progression of the disease.