p < 0.0001 sound good?

[Guest guest]

I think acceptance/emphasis of trigger points is on the upswing. I

think Boyd asserts that bruxism could be involved in migraine,

whereas I think its role in headache is more canonical for tension

headache (not real sure). This 'stract seems to tally with what Boyd

is saying; on the other hand, there's that aperture-closing surgery

that also suppresses migraine, which is kinda coming out of left

field in relation to this, as far as I can see.

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Trigger points were found in 92 (93.9%) migraineurs and in nine

(29%) controls (P < 0.0001).

Trigger point palpation provoked a migraine attack in 30 (30.6%)

patients.

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European Journal of Neurology

Volume 13 Page 244 - March 2006

doi:10.1111/j.1468-1331.2006.01181.x

Volume 13 Issue 3

Trigger point evaluation in migraine patients: an indication of

peripheral sensitization linked to migraine predisposition?

E. P. Calandre, J. Hidalgo, J. M. García-Leiva and F. Rico-

Villademoros

Although migraine is a neurovascular disorder, both scalp tenderness

and referred pain have been observed in migraine patients. The

present study was carried out to investigate the presence of trigger

points eliciting referred pain in 98 migraine patients and in 32

healthy subjects. Trigger points were found in 92 (93.9%)

migraineurs and in nine (29%) controls (P < 0.0001). The number of

individual migraine trigger points varied from zero to 14 (modal

number: 4), and was found to be related to both the frequency of

migraine attacks (P < 0.0001), and the duration of the disease (P =

0.017). About 74% of the total detected trigger points were found in

temporal and/or suboccipital areas; other locations were mainly

found in patients showing more than four trigger points. Trigger

point palpation provoked a migraine attack in 30 (30.6%) patients.

Pericraneal allodynia was found in 15 (15.3%) patients. These data

indicate that nociceptive peripheral sensitization is a usual

finding in migraine, and that central sensitization can develop in

patients with frequent attacks and long-lasting disease. Trigger

points' detection in migraine patients could be useful when applying

therapies like acupuncture, needling or botulinum toxin injections

directed to reduce peripheral sensitization.