Acid? Nope, classic migraine. I am one of the lucky folks who share the same plight that Lewis Carol, author of Alice in Wonderland, suffered. No wonder he wrote such a crazy story. I'm not feeling that great, so no long blog post. Here is the link to the image source and a great explanation of the phenomena . Luckily I don't get them very often. From Wikipedia : Migraine and epilepsy In his diary for 1880, Dodgson recor ded experiencing his first episode of migraine with aura, describing very accurately the process of 'moving fortifications' that are a manifestation of the aura stage of the syndrome. [72] Unfortunately there is no clear evidence to show whether this was his first experience of migraine per se, or if he may have previously suffered the far more common form of migraine without aura, although the latter seems most likely, given the fact that migraine most commonly develops in the teens or early adulthood. [73] Another form of migraine aura, Alice ...