Basilar-type Migraine – Strangest Migraine on the Block?
It’s one of the strangest types of migraine around: Basilar type migraine.
People with this type of migraine can be misdiagnosed very easily. They might be diagnosed with epilepsy. Or, they might even appear to be drunk, or under the influence of drugs!
Since it’s first diagnosis in 1961, we’ve learnt a lot about basilar type migraine. For one thing, we know that a spasm of the basilar artery is not the root of the problem (hence the name change from basilar artery migraine to basilar type migraine (BTM)).
Unlike many migraine attacks, attacks from BTM are often two-sided. The throbbing headache is at the back of the head.
Unlike hemiplegic migraine, BTM doesn’t involve motor weakness. But the symptoms can be pretty severe.
The visual aura can be severe enough to cause temporary blindness. Then there can be problems with coordination, dizziness, double vision, jerky eye movements, trouble hearing, slurred speech, nausea, pins and needles. Usually the attacks are short (lasting less than an hour), but they have been known to go on for days. Sometimes the strange symptoms come in succession, one after another. Some patients even lose consciousness!
Special concerns about basilar type migraine? The symptoms can be confused with other serious conditions, for one thing, so your doctor may call for more tests than would be normal with migraine. Also, there’s concern that those with BTM may have a greatly increased chance of stroke.
Basilar type migraine is treated in similar ways to other types of migraine. However, some doctors avoid triptans, ergotamines and beta-blockers. Because of the rarity of BTM, fewer studies have been done (I do have at least one friend who has it, though!).
See the National Headache Foundation’s brief article on basilar type migraine.