Chris Allen's sudden loss of sensation on a private visit to Cuba three years ago puts him on of a growing list of Americans asking if they, too, were victims of mysterious, invisible attacks.
The South Carolina native got into bed on his first night in the same Havana hotel where the U.S. says embassy workers have been attacked. Within minutes the tingling spread to all four limbs. He rushed back to the U.S., but the numbness persisted for months as doctors tried and failed to find a cause.
There's no conclusive proof that Allen's symptoms are connected to the 22 "medically confirmed" cases. But Allen's case illustrates the essential paradox of the Havana mystery: If you can't say what the attacks are, how can you say what they're not?
