1. Health
Headache Glossary

E


Electroencephalograph (EEG)
test used to detect and record the electrical activity generated by the brain.
Electromyograph (EMG)
test used to discover diseases of the muscles, spinal cord, and peripheral nerves by measuring how electrical current moves through them.
Electronystagmography (ENG)
the use of electrooculography (a record of the standing voltage between the front and back of the eye that is correlated with eyeball movement (as in REM sleep) and obtained by electrodes suitably placed on the skin near the eye) to study nystagmus (a rapid involuntary oscillation of the eyeballs occurring normally with dizziness during and after bodily rotation or abnormally after injuries {as to the cerebellum or the vestibule of the ear})
Endorphins
hormone-like substances produced in the brain and having analgesic properties.
Episodic
occurring in episodes, coming and going with no discernable pattern.
Ergotamine
drug originally derived from the ergot fungus. Constricts blood vessels and has been used since the 1920's to treat migraine headaches. They are used to treat severe, throbbing headaches, such as migraine and cluster headaches. Dihydroergotamine and ergotamine are not ordinary pain relievers. They will not relieve any kind of pain other than throbbing headaches. Because these medicines can cause serious side effects, they are usually used for patients whose headaches are not relieved by acetaminophen, aspirin, or other pain relievers.

 


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