Among the causes of<unk>  are: * anatomical defects such as nasal septum deformation or congenital narrowness of nasal meatus and the gullet * acute tonsillitis and/or adenoiditis * obesity or being overweight * neuromuscular disease or any condition that entails weakened respiratory muscles * hypoventilation syndromes involving compromised or failed respiratory drive * use of sedatives, for example sleeping pills * hazardous alcohol use * smoking * aging * others, most of which are also typical causes of airway obstruction, snoring and sleep apnea
Hypopnea
Apnea
Bradypnea
Cornea
Hyperpnea
Bendopnea
Labored breathing
Tachypnea