It began with anxiety and depression. A few months later, hallucinations appeared.
Then the Texas man, in his 40s, couldn't feel the left side of his face.
He thought the symptoms were because of a recent car accident. But the psychiatric problems got worse. And some doctors thought the man might have bipolar disorder.
Eventually, he couldn't walk or speak. He was hospitalized. And about 18 months after symptoms began, the man died.