The correct answer is "this is the result of neurological factors over which you have no direct control".
Narcolepsy is a neurological condition which blocks a person's ability to control its sleep-wake cycle. Common symptoms could be bad sleep quality, hallucinations while sleeping, sudden loss of muscle strength and excessive sense of sleepiness during the day. Being a neurological condition, patients have no control over their symptoms. The causes of the disorder are unknown, only a very small percentage of the cases (10%) is considered to be familial. Specific psychological conditions, such as trauma, are suggested to play a role.
