PMID: 18710083Aug 20, 2008Paper

Neurophysiological methods in headache diagnosis

Acta Medica Croatica : C̆asopis Hravatske Akademije Medicinskih Znanosti
Snjezana Miskov

Abstract

Neurophysiological methods used in the diagnosis of headache, especially migraine are: electroencephalography (EEG), evoked cortical potentials (VEP, BAER, ERP), reflex responses, autonomic tests and transcranial magnetic stimulation (TMS). Interpretation of EEG can be important for the differential diagnosis of some disorders with headache as a presenting symptom. Noninvasiveness, accessibility and ability to repeat the test due to exposure to harmful ionization are the main advantages of EEG. The role of thorough medical history and clinical assessment in patients with headache should not be underestimated. Interictal EEG (between headache attacks) is not significant in routine evaluation of these patients, but can be useful in patients with unusual symptoms suggesting epilepsy or migraine. It is indicated in patients with an abrupt onset of headache, in patients with migraine followed by neurological signs, in basilar migraine, migraine with extended duration of aura and in cases where epilepsy is suspected. Headache as a symptom is present in various brain and systemic diseases and metabolic disorders. EEG changes seen in headache patients are not specific for a particular disorder, but can suggest additional evaluation and...Continue Reading

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