1. Parkinson's Disease.- 2. Measuring Parkinson's Disease symptoms.- 3. Demographics profiles of Parkinson's Disease.- 4.Tremors and Bradykinesia.- 5. Handwriting of Parkinson's Disease.- 6. Gait and Posture.- 7. Olfactory.- 8. Eye Gaze and Facial expression.- 9. Voice symptoms.- 10. Treatment of Parkinson's Disease.- 11. Misdiagnosis of Parkinson's Disease.- 12. Modelling of Basal Ganglia of Parkinson's Disease.