Differential diagnosis of cranial nerve lesions includes central and peripheral causes. Causes vary according to which cranial nerve is affected, and whether multiple cranial nerves are involved. See also
Diseases that affect the the peripheral nerves, either motor or sensory. Important subgroups for differential diagnosis are: predominately motor, painful peripheral neuropathies and mononeuritis multiplex
A radiculopathy is sensory or motor dysfunction resulting from pathology involving a spinal nerve root. Symptoms include weakness, burning, tingling, and ‘shooting’ pain in a nerve root distribution.
Seizures are the manifestation of abnormal hyperexcitable discharges of cortical neurons. 10 minutes of continuous seizure activity is now considered status epilepticus, which may result in neuronal damage. Seizures should be aggressively treated if they last longer than 5 minutes.
Floppy infants have globally decreased muscle tone, but can be either 'weak' or 'strong' corresponding to lower or upper motor neuron lesions respectively.
Intracranial Structures That Exhibit Contrast Enhancement. CT Head with contrast is usually performed to identify mass lesions or vascular abnormalities.
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