Battle's sign

In medical terminology, Battle's sign, also mastoid ecchymosis, is an indication of fracture of posterior cranial fossa of the skull, and may suggest underlying brain trauma. Battle's sign consists of bruising over the mastoid process, as a result of extravasation of blood along the path of the posterior auricular artery.^[1] The sign is named after William Henry Battle.^[2] Note well that this sign will take at least one day to appear after the initial traumatic basilar skull fracture, similar to Raccoon eyes. Battle's sign is usually seen after head injuries resulting in injury to mastoid process leading to bruising.

Battle's sign may be confused with a spreading hematoma from a fracture of the mandibular condyle,^[3] which is a less serious injury.

References

↑ Naumann, Hans Heinz; Jan Helms (1998). Head and neck surgery. Thieme. p. 154. ISBN 0-86577-660-1.
↑ synd/2976 at Who Named It?
↑ Banks, Peter; Brown, Andrew E. (2000). Fractures of the facial skeleton. Oxford: Wright. p. 43. ISBN 0723610347.

Head, general	Battle's sign Broca aphasia Kernig's sign Macewen's sign Myerson's sign Stroop test Wada test Dix-Hallpike test Hirano body

Multiple sclerosis	Dawson's fingers Lhermitte's sign Charcot's neurologic triad Uhthoff's phenomenon

Other	Romberg's test increased intracranial pressure Cushing's triad Miller Fisher test

Combination	Jendrassik maneuver

Lower limb	Babinski sign Chaddock reflex Oppenheim's sign Westphal's sign

Upper limb	Hoffmann's sign

Other torso/limbs

Upper limb	Froment's sign carpal tunnel syndrome Tinel sign Phalen maneuver

Lower limb	Abadie's sign of tabes dorsalis Gowers' sign Hoover's sign Lasègue's sign Trendelenburg's sign

Torso	Beevor's sign

General	Todd's paresis Jolly's test

General wounds and injuries (T08-T35, 870-949)

Abrasions	Abrasion Avulsion

Blisters	Blood blister Coma blister Delayed blister Edema blister Fracture blister Friction blister Sucking blister

Bruises	Hematoma/Ecchymosis Battle's sign Raccoon eyes Black eye Subungual hematoma Cullen's sign Grey Turner's sign Retroperitoneal hemorrhage

Animal bites	Insect bite Spider bite Snakebite

Other:	Ballistic trauma Stab wound Blunt trauma/ superficial/closed Penetrating trauma/open Aerosol burn Burn/Corrosion/Chemical burn Frostbite Occupational injuries Traumatic amputation

By region	Hand injury Head injury Chest trauma Abdominal trauma

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