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Amazing Notebook On Progressive Supranuclear Palsy Prognosis
Progressive supranuclear palsy is a rare illness that gradually destroys nerve cells in the parts of the brain that control eye movements, breathing, and muscle coordination. The loss of nerve cells causes palsy, or paralysis, that slowly gets worse as the illness moves on. The palsy affects capability to move the eyes, relax the muscles, and control balance.
Progressive supranuclear palsy is an illness of middle age. Symptoms generally begin in the 60s, rarely before age 45 or after age seventy five. Men develop PSP more frequently than women do. It has effects on three to four people per million each year.
Progressive supranuclear palsy prognosis: affects the brainstem, the basal ganglia, and the cerebellum. The brainstem is located at the apex of the spine. It controls the most simple functions required for survival-the involuntary ( unwilled ) movements like breathing, blood pressure, and pulse rate. The brainstem has 3 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 visible center. The fundamental ganglia are islands of nerve cells located deep in the brain. They're concerned in the initiation of voluntary ( willed ) movement and control of emotion. Damage to the fundamental ganglia causes muscle rigidity ( spasticity ) and tremors. 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 demolished. The term supranuclear means that the damage is done above ( supra ) the nuclei. Patients with PSP have problems with voluntary ( willed ) eye movement. At first, the problem only happens in attempting to look down. As the disease advances, capability to move the eyes right and left is also influenced. However reflex or unwilled eye movements remain standard. Thus, when the patient's head is leaned upwards, the eyes move to look down. These reflex movements remain normal until late in the course of the illness. The higher eyelids might be pulled back, the eyebrows raised, and the brow wrinkled, causing a typical wide-eyed stare. Rate of blinking may decline from the normal 20-30 per minute to 3 to five 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 evidence of PSP may be frequent falls or stiff, slow movements of the arms and legs. These symptoms may appear as much as five years before the characteristic vision issues. Walking becomes very ungainly, and some patients have a tendency to lean and fall backward. Facial muscles may be weak, causing slurred speech and difficulty swallowing. Sleep may be ruffled and thought processes slowed. Although memory remains intact, the slowed speech and thought patterns and the rigid countenance could be mistaken for senile dementia or Alzheimer's illness. Emotional responses may become exaggerated and unbecoming, and the patient may experience anxiety, depression, and agitation.
The root of PSP isn't known. Most of the people who develop PSP come from families with no history of the illness, so it does not seem to be inherited, except in certain rare examples. People who have PSP seem to lack the neurotransmitters dopamine and homovanillic acid in the fundamental ganglia. Neurotransmitters are chemicals that help carry electric impulses along the nervous system. Broadcasting structures in brain cells called neurofibrils become disorganised ( neurofibrillary tangles ). Neurofibrillary tangles are also found in Alzheimer's disease, but the pattern is rather different. Check out also information on cerebral palsy.
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