Hyporeflexia
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Hyporeflexia | |
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Other names | Hypo-reflexia |
Specialty | Neurology |
Hyporeflexia is the reduction or absence of normal bodily reflexes (areflexia). It can be detected through the use of a reflex hammer and is the opposite of hyperreflexia.
Hyporeflexia is generally associated with a deficit in the lower motor neurons (at the
In spinal shock, which is commonly seen in the transection of the spinal cord (Spinal cord injury), areflexia can transiently occur below the level of the lesion and can later become hyperreflexic. Cases of severe muscle atrophy or destruction may render the muscle too weak to show any reflex and should not be confused with a neuronal cause.
Hyporeflexia may have other causes, including hypothyroidism, electrolyte imbalance (e.g. excess magnesium), and drug use (e.g. the symptoms of benzodiazepine intoxication include confusion, slurred speech, ataxia, drowsiness, dyspnea, and hyporeflexia).[1]
Diseases associated with hyporeflexia include
- Centronuclear myopathy
- Guillain–Barré syndrome
- Lambert-Eaton myasthenic syndrome[2]
- Polyneuropathy (Achilles and plantar reflexes)
- Friedreich's Ataxia
See also
- Hyperreflexia, exaggerated reflexes.
- MEGF10
References
- ^ "Reflex, Abnormal - MeSH - NCBI". www.ncbi.nlm.nih.gov. Retrieved 2019-04-03.
- PMID 11225256.