Chronic condition. Narcolepsy is a chronic medical condition caused by the loss of a chemical in the brain (orexin/hypocretin). The symptoms include excessive daytime sleepiness, vivid dreams, sleep paralysis, and sometimes the brief loss of muscle tone (cataplexy). A sleep study can make the diagnosis. See your doctor if concerned as there are treatments. www.wakeupnarcolepsy.org is a good source of information.
Narcolepsy. Get all the information he can and be supportive. Oftentimes people with narcolepsy feel alone and outcasted. www.narcolepsynetwork.org can be helpful. Also there are some excellent treatments. He should try to work with his physcians and learn helpful information so he is optimally functional.