Acute epiglottitis (inflammation of the epiglottis) is virtually always caused by Haemophilus influenzae type B; rare cases have been due to Streptococcus pneumoniae and Staphylococcus aureus. Laryngitis is usually due to the common respiratory viral agents, the most important of which are adenoviruses and influenza viruses.

Laryngotracheitis and spasmodic croup are common illnesses in children and are due to viruses or Mycoplasma pneumoniae. The most important agent is parainfluenza virus type 1. This virus, as well as parainfluenza type 2 and influenza A and B viruses, results in outbreaks of disease. In areas of the world

Table VIII.30.1. Classification of crouplike illnesses




Laryngotracheitis and spasmodic croup



Mechanical Foreign body Postintubation trauma


Acute angioneurotic edema where diphtheria toxoid immunization is not carried out, laryngotracheitis is also caused by Coryne-bacterium diphtheria.

Laryngotracheobronchitis and laryngotracheo-bronchiopneumonitis are frequently caused by the same viruses that cause laryngotracheitis. These two illnesses are caused also by S. aureus, Streptococcus pyogenes, S. pneumoniae, and H. influenzae.

Your Heart and Nutrition

Your Heart and Nutrition

Prevention is better than a cure. Learn how to cherish your heart by taking the necessary means to keep it pumping healthily and steadily through your life.

Get My Free Ebook

Post a comment