Paralysis agitans has four main motor symptoms: postural instability, bradykinesia, rigidity and tremors.
With postural instability, the patient has impaired balance, which affects walking. Complications of paralysis agitans include falls.
Bradykinesia is a slowness of movement. The patient can have difficulty either starting or continuing a movement.
The rigidity, or stiffness, can occur in the patient’s limbs and trunk.
The tremors of paralysis agitans can occur when the patient’s arm or leg is at rest, or when she is holding that limb out. They go away when the patient moves.
MedlinePlus noted that over time, a patient with paralysis agitans can also have the tremors in her feet, head, tongue or lips.
The progression of symptoms in paralysis agitans can take 20 or more years, though the National Institute of Neurological Disorders and Stroke noted that the disease may progress faster in certain patients.