Immune System

{"ops":[{"insert":"Diagnosis and reasoning"},{"insert":"\n","attributes":{"header":1}},{"insert":"Cough in a pediatric patient is most often due to a respiratory tract infection. The vast majority of these illnesses are mild and self-limiting. However, it is nonetheless important to assess these children for any \u0022red flags\u0022 that might herald a sinister pathology.\n\nThis boy\u0027s history does have several red flags: persistence of the cough for 5 weeks; nocturnal paroxysms; inspiratory whoops; posttussive vomiting (which is rather unusual at this age); and anorexia with significant weight loss.\n\nThe triad of cough, inspiratory whooping, and posttussive vomiting is strongly suspicious for pertussis; preceding vaccination against the disease does not preclude this possibility. Atypical pneumonia is probably the other key differential diagnosis"}]}

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