Narcolepsy is a chronic sleep disorder that causes excessive sleepiness along with other related symptoms.
This disease occurs when there is a deficiency of the brain chemical called orexin A and B or also known as hypocretin 1 and 2.
Genetics and nacrolepsy are also associated to some extent. T
The major symptoms are excessive daytime sleepiness even though the person may have had enough sleep during the night time, sleep attacks, cataplexy that is the sudden loss of muscle tone, hallucinations, disturbed sleep during the night time and sleep paralysis.
Blurred vision and memory problems are also seen in some people. Medication and certain behavioral changes like avoiding cetain drugs, sleeping for 20-30 minutes during the daytime helps to control this disease.