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A presumptive diagnosis of temporal bone fracture can be made with the presence of three physical findings. Hemotympanum (A) is a collection of blood in the middle ear and gives the tympanic membrane and reddish-blue hue when visualized externally. Postauricular ecchymosis, or Battle's sign (B), is an arch-shaped bruise behind the external ear. Periorbital ecchymosis, or Raccoon sign (C), is circular bruising around the eye.
