Its name comes from the barking-dog or seal-like cough it causes. Croup is spread by a virus that attaches to the throat's lining and causes the upper airway to swell. Fever usually accompanies it, and symptoms last for five to seven days.
Treatment For severe cases, liquid prednisone (a steroid that calms inflammation) is sometimes prescribed. For routine, mild cases, your doctor may suggest anti-fever medications if fever is present. At home, you can help your child by exposing her to alternating hot and cold air: steam up your bathroom like a homemade sauna, and have your child sit in it for five minutes, then follow with a blast of cold air, either from outside or in front of an open freezer door. This helps to decrease airway swelling and makes breathing easier.
Contagious factor It's contagious as long as fever and cough are present. While prednisone is helpful in decreasing symptoms' severity, it doesn't prevent your child from spreading the illness as long as he has symptoms. So keep him home until the "barking" subsides.