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Neurodegenerative disorders are a group of conditions that result from the progressive degradation of the structure and functioning of the brain and the nervous system.

Parkinson's disease is a neurological ailment that causes issues with balance, posture, walking, and tremors or shaking. The nerve cells in the brain cause the dopamine levels to drop, which causes Parkinson鈥檚.

In Alzheimer鈥檚 disease, the patient's brain shrinks, leading to the death of the brain cells. Alzheimer鈥檚 can be caused by dementia, and the patient鈥檚 thinking, cognitive-behavioral and social skills are declined over time. The brain cells and their connections die, leading to memory loss and other critical mental functions.

Alzheimer鈥檚 affects language and memory specifically; with Parkinson's disease, a person's problem-solving abilities may be impaired, their thinking speed may be slowed, and their mood and other cognitive functions may be altered.

Alzheimer鈥檚 causes the person's ability to both move and function to diminish, whereas, in Parkinson鈥檚, the patient may have a good memory but lose their ability to walk and move.

Thus, both Parkinson鈥檚 and Alzheimer鈥檚 are neurodegenerative brain disorders; a defect in the brain cells causes both. Alzheimer鈥檚 can be worse as there is memory loss. Parkinson鈥檚 can be less harmful than Alzheimer鈥檚 as it includes just the loss of movement and essential functions.