(
Springer) Dozens of embassy staff reported an array of complaints that have baffled the medical community, the most prominent being concussion-like symptoms without head trauma. Studies of the embassy patients have been inconclusive. In their book Havana Syndrome: Mass Psychogenic Illness and the Real Story Behind the Embassy Mystery and Hysteria, authors Robert W. Baloh and Robert E. Bartholomew observe that the outbreak is notably similar to the appearance of 'shell shock' and other combat syndromes.
