Severe narcolepsy found to damage a second brain region

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medicalxpress.comby University of California, Los AngelesApril 30, 2026Submitted May 1, 2026

For nearly 25 years, scientists believed they knew what caused the most severe form of narcolepsy. A new UCLA Health study now suggests they were only half correct. In a study published in Nature Communications, UCLA Health researchers have discovered that narcolepsy with sudden loss of muscle strength, known as cataplexy, involves degeneration of neurons in not one, but two regions of the brain.

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