PTA Physical Therapy Assistant

Answer: B - Bruise over mastoid is called battle’s sign.

After a head injury, assessing the area of bruise gives a clue of the location of the injury site and fracture of the skull bones. Battle’s sign is developed within 24 - 48 hours after injury.

Bruise in orbital margin, bruise under conjunctiva occurs in the fracture of the anterior fossa of basal skull.

Generally bleeding from the external auditory meatus occurs in petrous bone fracture.