Cerebral blood flow changes in pseudomigraine with pleocytosis analyzed by single photon emission computed tomography. A spreading depression mechanism?
Pseudomigraine with pleocytosis is a benign and autolimited syndrome. The etiology has been related to viral infection, but its pathophysiology is not yet well identified. To investigate this point, and to see if there were changes in cerebral blood flow (as in migraine), we performed single photon emission computed tomography (SPECT) studies in four patients who fulfilled the diagnostic criteria for this syndrome. This was done during the acute phase and we repeated SPECT after resolution of the syndrome in two of them. We found a reduction in brain blood flow on the side of origin of the neurological deficits during the acute phase. This normalized after recovery of the syndrome. The finding suggests that the neurological deficits in this syndrome could be produced by a spreading depression-like mechanism similar to that proposed for migraine with aura.
Fuentes
B
B
Department of Neurology, Hospital Universitario La Paz, Universidad Autónoma Madrid, Spain.
Diez Tejedor
E
E
Pascual
J
J
Coya
J
J
Quirce
R
R
D000328:Adult; D001037:Aphasia / Q000134:cerebrospinal fluid / Q000000981:diagnostic imaging / Q000209:etiology; D002560:Cerebrovascular Circulation; D013181:Cortical Spreading Depression; D005260:Female; D006261:Headache / Q000134:cerebrospinal fluid / Q000000981:diagnostic imaging* / Q000209:etiology; D006429:Hemiplegia / Q000134:cerebrospinal fluid / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D007964:Leukocytosis / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D019690:Technetium Tc 99m Exametazime; D015899:Tomography, Emission-Computed, Single-Photon; D014777:Virus Diseases / Q000150:complications
D019690:Technetium Tc 99m Exametazime