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While interpretation of the results requires background knowledge, irregular data can be used to diagnose many diseases. If the activity of the nerves at rest is abnormal, this may indicate nerve lesion, radiculopathy, or lower motor nerve degeneration. The amplitude or duration of the potential spike may also be used to gather information.
Abnormal parameters in multiple nerves or across all nerves in a given limb or multiple limbs may indicate damage to multiple nerves, polyneuropathy, or generalized nerve disease or damage, generalized peripheral neuropathy. [6] Some of the common disorders that nerve conduction studies can diagnose are: Carpal tunnel syndrome; Cubital Tunnel ...
Sural nerve biopsy; biopsy is considered for those patients in whom the diagnosis is not completely clear, when other causes of neuropathy (e.g., hereditary, vasculitic) cannot be excluded, or when profound axonal involvement is observed on EMG. Ultrasound of the peripheral nerves may show swelling of the affected nerves. [32] [33] [34]
Amyotrophic lateral sclerosis is a progressive and inevitably fatal neurodegenerative disease affecting the motor neurons. [9] Because ALS shares many symptoms with other neurodegenerative diseases, it can be difficult to diagnose properly. The best method of establishing a confident diagnosis is via electrodiagnostic evaluation.
Patients with hereditary motor and sensory neuropathies are diagnosed through a physical evaluation that looks for muscle atrophy, weakness, and sensory responses. [3] In addition to this, electromyography and motor nerve conduction tests can help clinicians decide what type of motor and sensory neuropathy it is and how severe the disease is.
Cramp fasciculation syndrome (CFS) is a rare [1] peripheral nerve hyperexcitability disorder. It is more severe than the related (and common) disorder known as benign fasciculation syndrome; it causes fasciculations, cramps, pain, fatigue, and muscle stiffness similar to those seen in neuromyotonia (another related condition). [2]
Nerve conduction testing is also often done at the same time as an EMG to diagnose neurological diseases. [24] Some patients can find the procedure somewhat painful, whereas others experience only a small amount of discomfort when the needle is inserted. The muscle or muscles being tested may be slightly sore for a day or two after the ...
Nerve compression syndrome, or compression neuropathy, or nerve entrapment syndrome, is a medical condition caused by chronic, direct pressure on a peripheral nerve. [1] It is known colloquially as a trapped nerve, though this may also refer to nerve root compression (by a herniated disc, for example).