Parkinson's Disease [Part 1] | The 4 Cardinal Signs

The video discusses Parkinson's disease, focusing on its impact on the basal nuclei and the role of the substantia nigra in dopamine production. It explores genetic and environmental causes, using Michael J Fox and Muhammad Ali as examples. The video explains the four cardinal signs of Parkinson's, remembered by the acronym TRAP: tremor, rigidity, akinesia, and postural instability, detailing each symptom and its effects.

What is the significance of rigidity in Parkinson's disease, and how does it manifest in patients?

How does postural instability affect individuals with Parkinson's disease?