Britannica AI Icon

parkinson-plus disease

pathology
Also known as: multiple-system degenerations

Quick Summary

Parkinson-plus disease, also known as multiple-system degenerations, is a category of neurological disorders that share the primary symptoms of parkinsonism but also include other distinct neurological issues. Parkinsonism itself is characterized by the progressive loss of motor function due to the degeneration of neurons in the brain's substantia nigra, leading to a deficiency in the neurotransmitter dopamine.12

The core symptoms of parkinsonism include tremors, muscle rigidity, slowness of movement (bradykinesia), and postural instability. In Parkinson-plus diseases, these symptoms are accompanied by additional problems, which can vary depending on the specific condition. The exact causes of Parkinson-plus diseases are often unknown, but they are thought to involve a combination of genetic and environmental factors. Treatment typically focuses on managing the symptoms of parkinsonism, often with medications like levodopa, which helps to replenish dopamine levels in the brain.132

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.