Here is another strange brain injury inflicted on a US diplomat, this time in China:

US officials have issued a health alert in China after a US government employee stationed there reported “abnormal sensations of sound and pressure” that indicated a mild brain injury.

The US State Department is looking into whether the incident is a “sonic attack,” a US diplomatic official told CNN, similar to what happened in Cuba in 2016 and 2017, which led to a reduction in staffing at the nation’s US embassy in Havana.
The official who fell ill was assigned to the city of Guangzhou in southern China and reported a range of physical symptoms from late 2017 through to April 2018, the State Department said. The employee was sent back to the United States for assessment.  The US Embassy in Beijing learned on May 18 that the clinical findings of the evaluation matched that of a “mild traumatic brain injury,” an embassy spokeswoman told CNN.
A US Diplomatic official told CNN the State Department “is looking into whether this is a sonic attack, similar to what happened in Cuba.”  CNN has reached out to China’s Ministry of Foreign Affairs but has not yet received a response on this matter.  [CNN]
You can read more at the link, but it is believed that the sonic attacks in Cuba were caused possibly by a flawed spying device.  So whatever the spying device being used in Cuba was maybe it came from China and this same device malfunctioned there as well?