There are many types of disorders that can affect breathing during sleep, but the most common one is obstructive sleep apnea (OSA). OSA happens when there is a partial or complete collapse of the soft tissues of the airway during sleep, causing patients to intermittently gasp or struggle for air. Most often these patients will report snoring, but not always. Sometimes they present just with feeling that their sleep is restless, and they are having poor concentration during the day. Screening questionnaires can be helpful in identifying possible cases, but sleep testing is needed for confirmation. Treatment for sleep apnea can range from lifestyle adjustments, treatment for allergies, weight loss strategies, use of pillows to encourage optimal body positioning, an oral appliance made by a dentist, CPAP machines, to even surgical interventions by ENT and oral surgeons.