An individual with sleep apnea is aware rarely having difficulty in breathing, upon awakening as well. It is recognized due to its effects on body. Its symptoms may also present for the years without identifications during the time sufferer may also become conditioned to daytime sleeping; fatigue is associated with significant levels of the sleep disturbance.

First report in medical literature called as "obstructive sleep apnea" only dates from 1965, independently; it was described at that by German and French investigators.

The obstructive sleep apnea management was revolutionized with introduction of the continuous positive airway pressure was first described in year 1981 by the Colin Sullivan in Sydney , Australia . OSA (obstructive sleep apnea) is mot common category of disordered breathing.

Muscle tone of body ordinary relaxes it during sleep at the level of throat human airway is composed. The common symptoms include restless sleep, loud snoring, and sleepiness during daytime, while its diagnostic tests include polysomnography or oximetry in sleep clinic. People benefic from the various kinds of oral appliances for keeping airway open when going to sleep. Some surgical procedures are there to remove and tighten, widen the airway.