Respiratory distress in childhood is a frequent cause of admission to the emergency department. The initial management requires a rapid clinical evaluation in order to initiate appropriate interventions, which will improve respiratory status, and avoid cardiac arrest and hypoxic encephalopathy. There are many possible etiologies but in the vast majority of cases the following conditions are observed: nasal obstruction before 3 months and laryngitis after 6 months. Moreover, during winter acute viral bronchiolitis is the most common disease of the respiratory tract during the first year of life, and occurs in annual epidemics. The diagnostic of an inhaled foreign body must always be suspected. Prevention is based upon information given to families, as well as the medical community, which often minimises the seriousness of inhalation hazards.