Most people associate Parkinson's disease with ageing. The image that often comes to mind is that of an elderly person struggling with tremors or movement difficulties. Yet for many individuals, Parkinson's arrives much earlier than expected. Every year, awareness campaigns around Parkinson's disease highlight a lesser-known reality: some people develop the condition before the age of 50. This is known as Early-Onset Parkinson's Disease (EOPD).
What Exactly Happens Inside the Brain?
Parkinson's disease is a progressive neurological disorder. It develops when nerve cells responsible for producing dopamine gradually decline. Dopamine plays a crucial role in controlling movement, coordination, motivation, and several other brain functions. As dopamine levels drop, communication between different parts of the brain becomes less efficient.
According to Dr Shruti Mehta, Lab Head and Consultant at Metropolis Healthcare Ltd., "Parkinson's is a progressive neurological condition in which brain cells that produce dopamine, the chemical responsible for smooth, coordinated movement, gradually decrease. In early-onset cases, this process begins well before old age." The result is often subtle at first. A hand may shake slightly while resting. Walking may become slower. Tasks that once felt automatic may suddenly require more effort and concentration.
What makes EOPD particularly challenging is that the brain often remains sharp and active while the body gradually loses some of its fluidity of movement. Research supported by the US government's National Institute of Neurological Disorders and Stroke (NINDS) has shown that Parkinson's disease primarily affects movement pathways in the brain linked to dopamine production.
Symptoms Many People Mistake for Stress
One reason early-onset Parkinson's frequently goes undiagnosed is because the warning signs can appear ordinary. Many people attribute them to fatigue, stress, long working hours, or ageing. Dr Mehta advises people not to overlook symptoms such as:
- A slight tremor in a finger or hand while at rest
- Stiffness in the shoulders, arms, or legs
- Slowed movements during everyday activities
- Handwriting that becomes progressively smaller
- Reduced arm swing while walking
- Persistent constipation
- Sleep disturbances
- Increased anxiety
- A reduced sense of smell
"Early symptoms are easy to write off as stress or overwork," says Dr Mehta. These non-motor symptoms can sometimes appear years before noticeable movement problems emerge. That is why experts encourage individuals to seek medical attention if symptoms persist or gradually worsen. The US government's National Institute on Aging notes that changes in smell, sleep, mood, and bowel habits may appear before classic movement symptoms become obvious.
For someone building a career, raising children, paying a home loan, or planning for the future, a diagnosis of EOPD can feel deeply unsettling. Yet experts stress that understanding the condition early can open doors to better treatment and improved long-term outcomes.
