Narcolepsy may be easy to misdiagnose, especially narcolepsy type two, in which cataplexy does not occur. Excessive daytime sleepiness may be misdiagnosed as chronic fatigue disorder or other sleep disorders, like insomnia. Peers of patients may believe their drowsy behavior and irregular sleep pattern to be related to mental health conditions, like depression or anxiety. Cataplexy episodes specifically may be mistaken for epilepsy or similar seizure disorders. To strangers, symptoms of narcolepsy, including loss of muscle control, may appear similar to drunkenness or intoxication.