Amazing Notebook On Prognosis For Supranuclear Palsy

Progressive supranuclear palsy is a rare illness that steadily destroys nerve cells in the parts of the brain that control eye movements, respiring, and muscle coordination. The loss of nerve cells causes palsy, or paralysis, that slowly gets worse as the illness advances. The palsy has effects on capability to move the eyes, relax the muscles, and control balance.

Progressive supranuclear palsy is an illness of middle age. Symptoms customarily begin in the 60s, barely before age 45 or after age seventy five. Men develop PSP more often than ladies do. It is affecting three to four people per million every year.

Progressive supranuclear palsy prognosis: affects the brainstem, the basal ganglia, and the cerebellum. The brainstem is found at the apex of the spinal cord. It controls the most basic functions needed for survival-the involuntary ( unwilled ) movements such as breathing, blood pressure, and heart rate. The brainstem has three parts : the medulla oblongata, the pons, and the midbrain. The parts influenced by PSP are the pons, which controls facial nerves and the muscles that turn the eye outward, and the midbrain, the visual center. The basal ganglia are islands of nerve cells found deep in the brain. They are involved in the initiation of voluntary ( willed ) movement and control of emotion. Damage to the fundamental ganglia causes muscle rigidity ( spasticity ) and shocks. The cerebellum is located at the base of the skull. It controls balance and muscle coordination.

Vision is controlled by groups of cells called nuclei in the brainstem. In PSP, the nuclei continue to function, but the mechanisms that control the nuclei are destroyed. The term supranuclear implies the damage is done above ( supra ) the nuclei. Patients with PSP have trouble with voluntary ( willed ) eye movement. Initially, the problem only happens in making an attempt to look down. As the illness progresses, capability to move the eyes right and left is also influenced. However reflex or unwilled eye movements remain normal. Thus, when the patient’s head is angled upwards, the eyes move to look down. These reflex movements remain normal until late in the course of the illness. The upper eyelids may be pulled back, the eyebrows raised, and the brow wrinkled, causing a standard wide-eyed stare. Rate of blinking may fall from the normal 20-30 per minute to three to 5 per minute. It becomes tough to walk downstairs, to maintain eye contact during conversation, or to move the eyes up and down to read.
The earliest symptoms of PSP could be frequent falls or stiff, slow movements of the legs and arms. These symptoms may appear as much as five years before the characteristic vision Problems. Walking becomes increasingly ungainly, and some patients tend to lean and fall backward. Facial muscles may be puny, causing slurred speech and difficulty swallowing. Sleep may be troubled and thought processes slowed. Although memory remains intact, the slowed speech and thought patterns and the rigid facial expression might be mistaken for senile dementia or Alzheimer’s illness. Emotional responses may become exaggerated and inappropriate, and the patient may experience anxiety, depression, and agitation.

The cause of PSP isn’t known. Most people who develop PSP come from families with no history of the illness, so it doesn’t appear to be inherited, except in certain rare instances. People who have PSP appear to lack the neurotransmitters dopamine and homovanillic acid in the basal ganglia. Neurotransmitters are chemicals that help carry electric impulses along the nervous system. Transmitting structures in brain cells called neurofibrils become disorganized ( neurofibrillary tangles ). Neurofibrillary tangles are also found in Alzheimer’s disease, but the pattern is somewhat different. Check out also cerebral palsy info.