Key Takeaways
Can you diagnose this mystery illness?
A 39-year-old man experienced headache and transient aphasia after going breath-hold diving for 5 hours. During this time interval, he did 30 breath-hold dives each lasting 2 minutes.
On MRI diffusion-weighted imaging and apparent diffusion coefficient maps, there was a white matter lesion at the level of the left frontal lobe with no mass effect. After hyperbaric oxygen therapy, the symptoms disappeared, and the lesion had almost fully regressed.
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