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This nerve damage causes an individual to experience pain and motor weakness, first in the feet and hands and then progressing centrally. Alcoholic polyneuropathy is caused primarily by chronic alcoholism ; however, vitamin deficiencies are also known to contribute to its development.
The nerve conduction study is often combined with needle electromyography. The Department of Health and Human Services Inspector General recently identified the use of NCSs without a needle electromyography at the same time a sign of questionable billing. [9] The nerve conduction study consists of the following components:
Peripheral neuropathy may be classified according to the number and distribution of nerves affected (mononeuropathy, mononeuritis multiplex, or polyneuropathy), the type of nerve fiber predominantly affected (motor, sensory, autonomic), or the process affecting the nerves; e.g., inflammation (), compression (compression neuropathy), chemotherapy (chemotherapy-induced peripheral neuropathy).
Sensory neuronopathy is diagnosed clinically, based on signs and symptoms, along with nerve conduction studies. [1] Ataxia in the upper and lower extremities at onset or at full development, asymmetric distribution of sensory loss, sensory loss not being restricted to the lower limbs (as in length dependent axonal polyneuropathy) are specific ...
Although diseases often are suggested by the physical examination and history alone, tests that may be employed include electrodiagnostic testing, serum protein electrophoresis, nerve conduction studies, urinalysis, serum creatine kinase (CK) and antibody testing; nerve biopsy is done sometimes. [1] [3]
Among the signs/symptoms are the following (different symptoms are caused by different nerves, such as the foot drop caused by the peroneal nerve [4]): Other HNPP symptoms can include: Partial hearing loss and facial numbness (cranial nerves can be afflicted by HNPP), intolerable fatigue and pain, sensation loss and muscle weakness in the hands ...
Electrodiagnostics – electromyography (EMG) and nerve conduction study (NCS). In usual CIDP, the nerve conduction studies show demyelination. These findings include: [citation needed] a reduction in nerve conduction velocities; the presence of conduction block or abnormal temporal dispersion in at least one motor nerve;
Nerve conduction studies and electromyography are commonly used to evaluate large myelinated sensory and motor nerve fibers, but are ineffective in diagnosing small fiber neuropathies. [14] Quantitative sensory testing (QST) assesses small fiber function by measuring temperature and vibratory sensation. Abnormal QST results can be attributed to ...