Anne Jones, 62, and Robin Jones, 73, at their home in Menlo Park, Calif. He took a test that revealed proteins typical of Alzheimer's disease. Ramin Rahimian for NPR hide caption

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Ramin Rahimian for NPR

Finding Simple Tests For Brain Disorders Turns Out To Be Complex

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Insomnia, feeling isolated, and bursts of anger are symptoms of the anxiety disorder known as PTSD. iStockphoto.com hide caption

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Some patients with PTSD suffer recurring nightmares of a single event. /iStockphoto.com hide caption

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Ending Nightmares Caused By PTSD

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