Greetings Earthlings! 🙂

This week I’d like to talk about something that isn’t normally discussed in relation to autism- headaches and migraines.

Anyone can get headaches or migraines, but it appears that there is a link between autism and their frequency , with one study even suggesting that autistic children are twice as likely to experience migraines when compared with neurotypicals. Further studies are required to confirm comorbidity, but the studies that do exist suggest a lot of overlap.

So have they any idea why there is a link?

One of the most popular theories suggests that issues in sensory processing may make autists more susceptible to headaches and migraines. For both autists and migraine sufferers, differences in sensory processing can impair how the brain registers and modulates responses to sensory stimuli like light and sound which can trigger migraines following a sensory overload. There are a lot of structural changes in the brains of both autists and migraine patients which could further explain this sensitivity.

Research has also reported that autists have altered pain sensitivity which can distort their perception of headaches, so, what might be an ignorable ache in a neurotypical individual may be much more severe for an autist.

Interestingly, there may also be a link between headaches/migraines and our digestive health. The gut is innervated by a network of nerves known as the enteric nervous system, often nicknamed a second brain. Migraines are often co-morbid with gastrointestinal problems where issues in the second brain can influence changes in the main brain via the brain-gut axis. GI issues are frequently co-morbid with autism so this could be the most logical explanation for the link. I know I’ve certainly triggered migraines from eating things that didn’t agree with me, only to have the migraine immediately dissipate the minute my stomach hit the ejector button! 😂

Migraines have also been linked to low levels of serotonin in the brain. As previously discussed, serotonin levels are dysregulated in autists so this could also explain the link. This is particularly interesting as 95% of serotonin production occurs in the gut, so this further indicates a gut related link to headaches and migraines in autism.

Joint hypermobility could also be contributing to headaches. People with connective tissue disorders like Ehlers Danlos syndrome (EDS) frequently experience headaches. Weakness in supporting tissues like collagen can cause instability in the neck and spine which can pinch nerves, interrupting the flow of blood to the brain and triggering headaches and migraines. As joint hypermobility can be co-morbid with autism, this could further explain the link.

As with many aspects of the spectrum, susceptibility to headaches and migraines could also be genetic as there is an overlap in some genes linked to both autism and migraines.

Hope you enjoyed this post dear Earthlings!

Have a lovely weekend! 🙂

Aoife