What are the 15 Symptoms Indicating Parkinson's Disease?

11. Diminished Sense of Smell

Most people with Parkinson's experience a reduced sense of smell, which is a secondary symptom of the disease. Doctors say this symptom has to do with changes to the olfactory bulb in the brain, the primary relay station for smell signals. This condition, hyposmia, usually occurs before more noticeable symptoms appear. Most individuals do not realize they are experiencing a diminished sense of smell and it goes unnoticed, but researchers now know it is a prevalent symptom, occurring in more than 90 percent of people in the early stages of Parkinson's.