Douglas smith, the pen neurologist who examined thehavana cindrum patients, he says that regardless of the explanation, the suggestion that there may have been no attack, it's been difficult for patients. Douglas's team included tests specifically designed to show that havana sindrum wasn't just psychological. But john says this still doesn't rule out functional disorder. We may just need to rethink this seemingly hard division between what's neurological and what's psychological. Neurological and psychological refer to the same organ.