4-Slow movements
This is an initial symptom of Parkinson’s disease, but it might also be a bit difficult to trace in mild cases. Patients with Parkinson’s disease become progressively slow in activities such as walking, standing up, and performing easy motions. Facial expressions may slow down as well, and this may also affect the tone and speed of the patient’s speech. Sometimes this slow muscle response leads to drooling and difficulty to manage their own fluids in severe cases.