Narcolepsy - Prior to 2009/2010,
very few young people had ever been diagnosed with Narcolepsy.
Excessive Daytime Sleepiness - Some weeks or months
after receiving the H1N1 Swine Flu vaccine Pandemrix, children and teenagers started falling asleep at unusual times, in unusual places.
Uncharacteristic Moods Along with the tiredness, some of those affected rapidly become irrationally moody.
Hypnagogic Hallucinations and Sleep Paralysis - Many of the sufferers started getting horrific, real-feeling hallucinations as they were going to sleep, while often being paralised for several minutes.
Cataplexy - Many of those affected started to lose muscle tone following strong emotions. Severity varies from tongues hanging out, to complete collapses.