Migraine Variant Vertigo
About a third of persons having migraine might develop imbalance and dizziness. In many, this dizziness is not always necessarily accompanied with a headache unlike classical migraine. The cause is due to altered blood flow in the inner ear originating from the base of the skull.
The manifestations of migraine-associated vertigo are quite varied and may include episodic true vertigo, positional vertigo, constant imbalance, movement-associated dysequilibrium and imbalance. The vestibular system may show weakness on testing.