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Nystagmus. Nystagmus is a condition of involuntary (or voluntary, in some cases) [1] eye movement. [2] People can be born with it but more commonly acquire it in infancy or later in life. In many cases it may result in reduced or limited vision. [3] In normal eyesight, while the head rotates about an axis, distant visual images are sustained by ...
Multiple sclerosis can cause a variety of symptoms: changes in sensation ( hypoesthesia ), muscle weakness, abnormal muscle spasms, or difficulty moving; difficulties with coordination and balance; problems in speech ( dysarthria) or swallowing ( dysphagia ), visual problems ( nystagmus, optic neuritis, phosphenes or diplopia ), fatigue and ...
Children tend to have more favorable outcomes than adults, and cases presenting without fevers tend to have poorer outcomes. The latter effect may be due to either protective effects of fever, or that diagnosis and treatment is sought more rapidly when fever is present. [68] ADEM can progress to MS.
Progressive supranuclear palsy ( PSP) is a late-onset neurodegenerative disease involving the gradual deterioration and death of specific volumes of the brain. [ 2][ 3] The condition leads to symptoms including loss of balance, slowing of movement, difficulty moving the eyes, and cognitive impairment. [ 2] PSP may be mistaken for other types of ...
Inflammatory demyelinating diseases (IDDs), sometimes called Idiopathic (IIDDs) due to the unknown etiology of some of them, are a heterogenous group of demyelinating diseases - conditions that cause damage to myelin, the protective sheath of nerve fibers - that occur against the background of an acute or chronic inflammatory process.
0.032% ( world) Multiple sclerosis ( MS) is an autoimmune disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged. [ 3] This damage disrupts the ability of parts of the nervous system to transmit signals, resulting in a range of signs and symptoms, including physical, mental, and sometimes psychiatric ...
Vestibulocerebellar syndrome. Vestibulocerebellar syndrome, also known as vestibulocerebellar ataxia, is a progressive neurological disorder that causes a variety of medical problems. Initially symptoms present as periodic attacks of abnormal eye movements but may intensify to longer-lasting motor incapacity. The disorder has been localized to ...
Tourette syndrome or Tourette's syndrome (abbreviated as TS or Tourette's) is a common neurodevelopmental disorder that begins in childhood or adolescence. It is characterized by multiple movement (motor) tics and at least one vocal (phonic) tic.
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