Can a Coma Be Contagious?

In “The Sleeping Beauties,” Suzanne O’Sullivan examines those poorly understood conditions that fall at the tangled intersection of body and mind, like mysterious outbreaks of mass illness.

Lawmakers Back Changes at C.I.A. for Handling Mystery Health Episodes

Legislation approved by a House committee would also offer intelligence officials medical scans before transfer overseas to better diagnose Havana syndrome injuries.

C.I.A. Officer Suffers Havana Syndrome Symptoms

The officer, who had been traveling in India with the agency’s director, was given medical attention after an unexplained incident triggered injuries.

Pentagon Asks Personnel to Report Any Symptoms of Mysterious Ailments

The episodes, known as Havana syndrome, have left spies, diplomats, soldiers and others with brain injuries.