Couple quick blogs this busy weekend, from student questions this week.
Looks like many of my students get migraines. I bet school and stress and anxiety have a lot to do with it. I had several questions, including what causes migraines (I forgot the other questions, sorry).
Simple answer: don’t know exactly what causes migraines. Here’s what wikipedia has to say:
The exact mechanism of the head pain which occurs during a migraine is unknown. Some evidence supports a primary role for central nervous system structures (such as the brainstem and diencephalon) while other data support the role peripheral activation (such as via the sensory nerves that surround blood vessels of the head and neck). The potential candidates vessels include: dural arteries, pial arteries and extracranial arteries such as those of the scalp. The role of vasodilatation of the extracranial arteries, in particular, is believed to be significant.
- Olesen, J; Burstein, R; Ashina, M; Tfelt-Hansen, P (2009 Jul). “Origin of pain in migraine: evidence for peripheral sensitization”. Lancet neurology 8 (7): 679–90.doi:10.1016/S1474-4422(09)70090-0. PMID 19539239.
- Akerman, S; Holland, PR; Goadsby, PJ (2011-09-20). “Diencephalic and brainstem mechanisms in migraine”.Nature Reviews Neuroscience 12 (10): 570–84.doi:10.1038/nrn3057. PMID 21931334.
- Shevel, E (2011 Mar). “The extracranial vascular theory of migraine – a great story confirmed by the facts”. Headache51 (3): 409–17. doi:10.1111/j.1526-4610.2011.01844.x.PMID 21352215.