Hypersomnia is a condition in which you feel excessive sleepiness during the day. It may occur even after long stretches of sleep. Another name for hypersomnia is excessive daytime sleepiness (EDS).
Hypersomnia can be a primary condition or a secondary condition. Secondary hypersomnia is the result of another medical condition. People with hypersomnia have difficulty functioning during the day because they’re frequently tired, which can affect concentration and energy level.
Primary hypersomnia occurs with no other medical conditions present. The only symptom is excessive fatigue.
Secondary hypersomnia is due to other medical conditions. These can include sleep apnea, Parkinson’s disease, kidney failure, and chronic fatigue syndrome. These conditions cause poor sleep at night, leading you to feel tired during the day.