Moreover, there are some symptoms that cause hypersomnia. Hence, It can also cause by narcolepsy or sleep apnea, dysfunction of the autonomic nervous system, or drug or alcohol abuse. Moreover, in some situations, it affects by a physical problem, such as a tumor, head trauma, or injury to the central nervous system. Therefore, below mentioned are some symptoms of Hypersomnia.
Feeling unusually tired all the time.
The need for daytime naps.
Feeling drowsy, despite sleeping and napping not feeling refreshed when waking up.
Difficulty thinking and making decisions
Felling foggy.
Apathy.
Memory or concentration difficulties.
Excessive drowsiness.
Sleeping up to 20 hours a day.
Headaches.
Low-grade fever.
Loss of appetite.
Nausea and vomiting.
Irritability.
Thus, if you experience any such effects then immediately consult your doctor and start with the treatment.