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Therefore, damage to lower motor neurons will subsequently result in hyporeflexia and/or areflexia. [citation needed] In spinal shock, which is commonly seen in the transection of the spinal cord, hyporeflexia can transiently occur below the level of the lesion and can later become hyperreflexic.
Reflexes in the spinal cord below the level of injury are depressed (hyporeflexia) or absent (areflexia), while those above the level of the injury remain unaffected. The 'shock' in spinal shock does not refer to circulatory collapse, and should not be confused with neurogenic shock, which is life-threatening. The term "spinal shock" was ...
Cerebellar ataxia with neuropathy and vestibular areflexia syndrome (CANVAS) is an autosomal recessive late-onset heredodegenerative multisystem neurological disease. The symptoms include poor balance and difficulty walking. Chronic cough and difficulty swallowing may also be present.
areflexia (absence of neurologic reflexes) Chromosome 16q: SCA5 3rd–4th decade (10–68) >25 years Pure cerebellar Chromosome 11: SCA6 [17] 5th–6th decade (19–71) >25 years Downbeating nystagmus, positional vertigo Symptoms can appear for the first time as late as 65 years old. CAG repeat, 19p Calcium channel gene: SCA7 [18]
Usually, individuals with this condition have cerebellar ataxia, areflexia, high-arched feet, optic nerve wasting/degeneration, sensorineural deafness. [5]These symptoms have variable onset, but they generally begin episodically after having a fever-causing infection such as the common cold, manifesting mainly as sudden-onset ataxic episodes and encephalopathy.
This condition is distinct and usually episodic. An elevation of 20 mm Hg over baseline systolic blood pressure, with a potential source below the neurological level of injury, meets the current definition of dysreflexia. [15] Common presenting symptoms include: [5] headache; diaphoresis; increased blood pressure; facial erythema; goosebumps ...
A lower motor neuron lesion is a lesion which affects nerve fibers traveling from the lower motor neuron(s) in the anterior horn/anterior grey column of the spinal cord, or in the motor nuclei of the cranial nerves, to the relevant muscle(s).
Roussy–Lévy syndrome, also known as Roussy–Lévy areflexic dystasia, is a rare disorder of humans that results in progressive muscle wasting.It is caused by a mutation of the genes that code for proteins necessary for the functioning of the myelin sheath affecting the conductance of nerve signals and resulting in loss of muscles' ability to move.