Advanced brain scans found perplexing differences in U.S. diplomats who say they developed concussion-like symptoms after working in Cuba, a finding that only heightens the mystery of what may have happened to them, a new study says.

Extensive imaging tests on the American diplomats showed the workers had less white matter than a comparison group of healthy people and other structural differences, researchers said.

While they had expected the cerebellum, near the brain stem, to be affected given the workers’ reported symptoms — balance problems, sleep and thinking difficulties, headaches and other complaints — they found unique patterns in tissue connecting brain regions.

Ragini Verma, a University of Pennsylvania brain imaging specialist and the lead author, said the patterns were unlike anything she’s seen from brain diseases or injuries.

“It is pretty strange. It’s a true medical mystery,” Verma said.
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The Canadian government acknowledges that nine adults and five children from diplomatic families posted to Havana have suffered similar afflictions, including nausea, dizziness, headaches and trouble concentrating. The cause of the symptoms is not known and Cuban authorities have insisted they’re as puzzled and as eager to get to the bottom of the mystery as anyone.
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The second sentence of the article mentioned 5 of those affected, were children.

That being said, they probably weren't attending homosexual-coke parties.

I do wonder if they experienced any buzzing sensations. The article doesn't go into all the symptoms..