Pott's puffy tumour: a rare cause of forehead swelling in a child.

We report a case of Pott's puffy tumour in a 12-year-old. Owing to the late development of the frontal sinuses, frontal sinus infection in children is rare. When present it can lead to osteomyelitis associated with forehead swelling. Early diagnosis and active treatment prevent progression to life-threatening intracranial spread.