Patients do not get abnormal amounts of night sleep rather they have problems waking up
in the morning and staying awake during
the day.
The causes can be genetic, brain damage or medical disorders such as clinical depression, uremia and fibromyalgia. Sometimes hypersomnia may be due to other sleep disorders such as narcolepsy, sleep apnea, and restless leg syndrome. Your symptoms may be linked to depression.
You should consult a psychologist for a complete medical and psychological workup.