Havana syndrome: no notable brain damage, study finds. In 2016, American diplomats and employees stationed in Cuba complained of migraines, dizziness and even nausea.
NIH researchers sought to identify brain lesions by comparing MRI results between patients claiming to have the syndrome and a control group. The study “revealed no notable difference (… in brain structure or function” between individuals in the two groups, they emphasize. Both studies, however, were criticized in an editorial by David Relman, a microbiologist at Stanford Medical School.