“Seizures are not uncommon in the elderly. Nearly a quarter of those who have a first seizure are over 65. Most are caused by a stroke or a mass; traumatic head injuries can cause them. So can abnormalities in blood chemistry. In the emergency room, the man had no sign of any of these, despite a thorough exam and extensive testing and imaging.”

The patient had both neurological and psychiatric symptom, which complicated a speedy diagnosis. A “new group of disorders” involving the “immune system wrongly attacking the brain” was a final diagnosis. Read the NY Times Magazine article in the link below to learn more: