Parkinson Disease

{
  "id": "MLC-T-ENV-020251",
  "term": "Parkinson Disease",
  "field": "Environment",
  "definition": "1. A progressive degenerative disorder of the central nervous system characterized by loss of dopamine producing neurons in the substantia nigra and the presence of Lewy bodies in the substantia nigra and locus coeruleus. Signs and symptoms include tremor which is most pronounced during rest, muscle rigidity, slowing of the voluntary movements, a tendency to fall back, and a mask-like facial expression.\n\n2. A progressive disorder of the nervous system marked by muscle tremors, muscle rigidity, decreased mobility, stooped posture, slow voluntary movements, and a mask-like facial expression.",
  "references": [
    "National Cancer Institute Thesaurus",
    "National Cancer Institute Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/parkinson-disease/"
}