Las personas adultas que sufren migraña sin aura presentan un ligero estrechamiento de los vasos sanguíneos o arteriolas retinianas, según ha puesto de relieve un estudio de la University of Sydney (Australia), publicado en la revista “Headache”.
Los autores desarrollaron técnicas cuantitativas para medir el calibre de pequeños vasos en fotografías retinianas tomadas en 2.335 personas mayores de 54 años, que formaron parte de la población que participó en el Blue Mountains Eye Study.
Las personas con historial de migraña sin aura (128 pacientes) tenían arteriolas retinianas más estrechas que las que presentan historial de migraña con aura (182 pacientes) o sin historial de migraña (1.619 personas).
“Hallamos que, para todas las edades, los pacientes de migraña sin aura tenían un diámetro arteriolar retiniano más pequeño que los pacientes de migraña con aura o las personas sin migraña, lo que supone que este efecto es independiente de la edad”, han explicado los autores.
Headache 2006;46:997-1004
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