Currently, research is being done on a test that may detect Parkinson's disease in its early stages, before it affects speech and movement. However, the symptoms may be difficult to assess, particularly in the elderly. For example, the tremor may not appear when the person is sitting quietly with arms in the lap. The posture changes may be similar to osteoporosis or other changes associated with aging. Lack of facial expression may be a sign of depression .
Reflexes are essentially normal.
Tests are not usually specific for Parkinson's, but they may be required to rule out other disorders that cause similar symptoms. There is no known cure for Parkinson's disease. Treatment is aimed at controlling the symptoms. Medications control symptoms primarily by controlling the imbalance between the transmitters. The medications used vary, depending on the case.