What are the key symptoms of narcolepsy and his most common social/work related consequences in an adult without treatment?

Daytime drowsiness &: Falling asleep during the day. See http://www.Ncbi.Nlm.Nih.Gov/pubmedhealth/pmh0001805/ for causes, diagnostic procedures & treatments. Having a bmi of 30 or above, in the " obese" range, markedly increases risk of sleep apnea, but can be genetic. Other sleep disorders & seizure disorders are included in the list of causes. The impacts include decreased work performance & increased auto accidents.