CFS means that you are very tired or have a feeling of exhaustion that cannot be rested. You may also feel sick and have pain in the body. The symptoms of illness can be relieved by various methods. You can get treatment for symptoms such as sleep disorders, stomach upset and pain.
Here you can read more about chronic fatigue and narcolepsy.
Narcolepsy is a neurological disease that causes you to sleep during the days. You may also suddenly become weak in the muscles. Narcolepsy cannot be cured, but there are drugs that make it easier for you to stay awake during the day and sleep better at night.