Highly Recommended Article this issue:
Know the Red Flags for Synaptic Autoimmune Psychosis
Raising Awareness of AE in the Medical Community:
At a presentation January 15th, Dr. Dalmau, the world-renowned expert in Autoimmune Encephalitis, urged psychiatrists to become familiar with the red flags suggestive of synaptic autoimmunity as the underlying cause of first-episode, out-of-the-blue psychosis.
It’s important to have a high index of suspicion, because anti–NMDA receptor encephalitis is treatable with immunotherapy. And firm evidence shows that earlier recognition and treatment lead to improved outcomes. Also, the disorder is refractory to antipsychotics; indeed, antipsychotic agents make affected patients much worse, even to the point of developing something akin to neuroleptic malignant syndrome.
Manifestations of anti–NMDA receptor encephalitis follow a characteristic pattern, beginning with a prodromal flulike phase lasting several days to a week. This is followed by acute-onset bizarre behavioral changes, irritability, and psychosis with delusions and/or hallucinations, often progressing to catatonia. After 1-4 weeks of this, florid neurologic symptoms usually appear, including seizures, abnormal movements, autonomic dysregulation, and hypoventilation requiring prolonged ICU support for weeks to months. This is followed by a prolonged recovery phase lasting 5-24 months, and a period marked by deficits in executive function and working memory, impulsivity, and disinhibition. Impressively, the patient has no memory of the illness.
Dr. Dalmau and various collaborators continue to advance the understanding of this novel category of neuropsychiatric disease. They have developed a simple 5-point score, known as the NEOS score, that predicts 1-year functional status in patients with anti–NMDA receptor encephalitis. (Read about this research in Clinician's Corner).