Characterized by breathing lapses that occur while sleeping, sleep apnea can be a dangerous condition. Many people with this disorder struggle with daytime fatigue, irritability, anxiety, and even depression because they are unable to get a restful night of sleep. Fortunately, treatment is available. CPAP therapy, for example, utilizes a machine to force air into the airway through a mask on the nose/mouth while the patient is sleeping. Of course, proper CPAP equipment is essential for the most effective treatment.