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Postural instability during attacks of migraine without aura
E Anagnostou1, S Gerakoulis1, P Voskou1
1Department of Neurology, Eginition Hospital, University of Athens, Athens, Greece.
European Journal of Neurology
|October 9, 2018
Summary
Migraine attacks significantly impair postural control, increasing body sway during standing. This suggests a temporary cerebellar dysfunction and altered sensory processing during acute migraine episodes.
Area of Science:
- Neurology
- Neuroscience
- Vestibular System
Background:
- Migraine is often linked to dizziness and unsteadiness.
- Postural control during migraine attacks has not been previously studied.
Purpose of the Study:
- To measure upright stance stability in migraine patients during acute attacks.
- To investigate postural control changes during the ictal state of migraine.
Main Methods:
- Prospective assessment of static balance in 30 migraine patients and 30 controls using a force platform.
- Recordings were taken during quiet stance under varying visual and proprioceptive feedback conditions, both during attacks (ictal) and pain-free periods (interictal).
Main Results:
- Migraine patients exhibited significantly increased postural sway during attacks compared to pain-free periods and controls.
- Sensory re-weighting occurred, with reduced reliance on visual and proprioceptive input during ictal states.
- Romberg and vestibular Romberg quotients remained unchanged, but were inversely correlated with headache severity.
Conclusions:
- Increased postural instability during migraine attacks suggests transient cerebellar dysfunction.
- Acute migraine episodes alter sensory processing, favoring reduced dependence on visual and proprioceptive information.
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