The early symptoms of Parkinson's disease are often very slight and begin very slowly it can be hard for family members or friends to spot the early symptoms...  such as a constant blank look on the face, shaky hands, decreased arm swinging, a stooped posture, or shorter steps when walking. Parkinson's disease patients may notice that they are weaker or more tired. The disease may eventually involve 2 or more of the 4 main symptoms of Parkinson's disease:

• Tremors — rhythmic movements or shaking, especially in the hands and particularly when they are at rest
• Rigid limbs and trunk — muscle tenseness, stiffness, aching, or weakness
• Slowness of movement — difficulty beginning a task, such as washing or dressing
• Poor balance and coordination — problems with walking, such as shuffling, which may cause falls

With time, Parkinson's disease can leads to other symptoms, depression/anxiety, problems with chewing and swallowing, and speech changes. Some people may have problems with urination or constipation as well. While others may have trouble sleeping or problems with skin that is too oily or too dry.

It is always important to remember that the symptoms of Parkinson's disease can vary greatly from person to person. As with most illnesses.  One person may have tremors, while another may be very stiff and slow without any tremors.