All the conditions related to the respiratory system are treated by lung doctors. Given below is the list of a few more conditions dealt by lung specialists, Have a look. Bronchitis: Happens when you suffer from inflamed lower airways. Emphysema: Happens when your alveoli get damaged. Bronchiectasis: Condition when you from inflammation and excess mucus. Obstructive sleep apnea: when you suffer from breathing issues while sleeping.