10Brain Injuries
Narcolepsy would also result from a traumatic injury to specific parts of your brain. These regions are responsible for regulating and monitoring REM sleep or wakefulness. Thus, a disruption might change your sleep pattern or behavior and cause narcolepsy. The same effect can occur when you suffer from tumors or other diseases in those brain regions. However, keep in mind that this cause is extremely rare as the area of the sleep-monitoring parts in your brain is extremely small. [10]
