Parkinson’s disease is a slowly progressive neurological disease caused by the death of dopamine-producing neurons in the brain. It is generally associated with tremor or trembling of the arms and legs, stiffness and rigidity of the muscles, slowness of the movement, and impaired balance and coordination. As these symptoms become more pronounced, patients may have difficulty walking or completing other simple daily tasks. This disease not only affects the patient, but also his or her family.