Early last December, an 8-year-old boy showed up in Sameer Zuberi’s pediatric neurology clinic in Glasgow, Scotland. Previously healthy and active, the child had suddenly become unable to stay awake, and he described vivid, dreamlike hallucinations. His mother told the physicians at Glasgow’s Royal Hospital for Sick Children that her son was no longer attending school and had dropped all outside activities, including his favorite and most successful one, tae kwon do.
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