Description
Havana syndrome, also known as anomalous health incidents (AHIs), is a disputed medical condition. Starting in 2016, U.S. and Canadian government officials and their families reported symptoms of AHIs in about a dozen overseas locations. Reported symptoms include a sudden onset, associated with a perceived localized loud sound, of chronic symptoms that lasted for months, such as disabling cognitive problems, balance, dizziness, insomnia, and headaches. Havana syndrome is not officially recognized as a disease by the medical community.