Most people who get migraine with aura describe something visual. Zigzag lines, a blind spot that grows, shimmering edges. Some get numbness or trouble finding words.
A 43-year-old woman described to her neurologists something none of that covers. Before one of her attacks, she began giggling, then laughing loudly and unstoppably, aware the whole time that the behavior was out of place. Then the headache arrived, the same kind she had been having for years.
