<prompt> Battle sign -Periorbital ecchymosisMastoid bleedNose bleedBleed from tympanic membrane  <response>: The synopsis of forensic medicine toxicology;Dr k .s narayan reddy; 28th edition; pg.no. 107; A bruise behind the ear may indicate a basal fracture rather than a direct blow behind the ear .BATTLE S SIGN It is an example of ectopic bruising or percolated contusion. 