Fainting or dizziness
People with Parkinson’s disease often feel dizzy when they suddenly stand up out of a sofa or chair. Feeling fainting or dizzy can be a symptom of Parkinson’s disease because there is low blood pressure in patients going through Parkinson’s disease. Hot weather conditions or exposure to extreme sunlight can also cause dizziness but other than that, regular episodes of dizziness can be a sign of Parkinson’s disease.