Mar 12, · Croup in Adults Causes Caused by the para influenza virus, croup in adults is often seen during outbreaks of the common cold. This airborne viral infection is easily spread during coughs and sneezing episodes. As with the cold or flu infections, croup in adults can quickly run through a . Nov 16, · Croup is a respiratory infection. It causes your throat and upper airways of the lungs to swell and narrow. It is also called laryngotracheobronchitis.
Oct 12, · Croup is an infection that affects your breathing and causes a distinct “barking” cough. It usually impacts young kids, but in rare cases, adults can Author: Julie Marks. Nov 16, · Croup is more common in children, but adults can also get it. What causes croup in adults? Croup is commonly caused by a virus. It is common during the common cold season.