**6. Symptoms of obstructive sleep apnea**

Major symptoms: Snoring, apnea, excessive daytime sleepiness.

Cardiopulmonary symptoms: Systemic hypertension, pulmonary hypertension, nocturnal arrhythmia, atypical breath ache, acute pulmonary edema, reversible proteinuria.

Neurobehavioral and social: Restlessness and headache in the morning, insomnia, depression, anxiety, mood disturbances, tendency to accidents, nervousness, forgetfulness.

Other symptoms: Dry mouth, night transpiration, nocturnal cough, hearing loss, gastroesophageal reflux [1–21].
