Some Causes of Insomnia and Excessive Daytime Sleepiness

Disorder

Insomnia

Excessive Daytime Sleepiness

Adjustment insomnia

Central sleep apnea syndrome

Circadian rhythm sleep disorders

Drug-dependent and drug-induced sleep disorders

Inadequate sleep hygiene

Insufficient sleep syndrome

Narcolepsy

Obstructive sleep apnea

Periodic limb movement disorder

Physical sleep disorders or mental sleep disorders

Psychophysiologic insomnia

Restless legs syndrome

= commonly present (but insomnia and/or excessive daytime sleepiness can occur in any of these disorders).