Progressive supranuclear palsy is a condition that causes symptoms similar to those of Parkinson disease.
It involves damage to many cells of the brain. Many areas are affected, including the part of the brainstem where cells that control eye movement are located. Also affected is an area of the brain that controls steadiness when you walk. The frontal lobes of the brain are also affected, leading to personality changes.
The cause of the damage to the brain cells is unknown. The disease gets worse over time.
People with this condition have deposits in brain tissues that look like those found in patients with Alzheimer disease. There is a loss of tissue in most areas of the brain and in some parts of the spinal cord.
The disorder is most often seen in people over 60 years old, and is somewhat more common in men.
The goal of treatment is to control symptoms. There is no known cure for progressive supranuclear palsy.
Levodopa or other drugs raise the levels of a brain chemical called dopamine. They may temporarily reduce some symptoms, such as rigid limbs or slow movements. But these medications are usually not as effective as they are for Parkinson disease.
Many people with this condition will eventually need around-the-clock care and monitoring as they lose brain functions.
Treatment sometimes can reduce symptoms for a period of time, but the condition will get worse. Brain function will decline over time. Death commonly occurs in 5 to 7 years.
Newer drugs are being studied to treat this condition.
Joseph V. Campellone, MD, Division of Neurology, Cooper University Hospital, Camden, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.