Doctors give trusted helpful answers on causes diagnosis symptoms treatment and more. My family doctor has tried every medicine and referred me to a pulmonologist. Things That Help In Managing Sleep Apnea Home Remedies For Sleep He claims it s caused by sleep apnea. Sleep apnea coughing at night . Cough variant asthma gastro oesophageal reflux and upper airway cough syndrome. If your child has sleep apnea they might have to breathe through their mouth especially at night. Anonymous i have had my cpap 2 machine now for a month and i m now getting a cough with mucus build up in back of my throat. Investigations are usually aimed at identifying the three most common causes of chronic cough. These signs may not be the ones you first think of with sleep apnea but they can indeed suggest the condition is present. If you wake up with a very dry mouth and gummy front teeth it may also be a sign of sleep apnea shives says my. Mouth breathing and excessive urination. Fortun...