Tick-borne illnesses: a CME update.

North American tick-borne illnesses are a group of important emerging diseases whose incidence has been increasing for the past decade. Emergency physicians may be the first contact for patients with symptoms of tick-borne illness, thus it is important that these diseases remain on a physicians' differential diagnosis when presented with an appropriate clinical presentation. This CME activity provides an overview of the most common tick-borne illnesses in North America and will help physicians evaluate their clinical presentation, order appropriate diagnostic tests, develop pediatric treatment recommendations, and prepare to include tick-borne illnesses in the differential diagnosis of pediatric patients presenting with multisystem disease.