Bruising susceptibility (HP_0000978, a Human Phenotype Ontology entry) can be described as follows. An ecchymosis (bruise) refers to the skin discoloration caused by the escape of blood into the tissues from ruptured blood vessels. This term refers to an abnormally increased susceptibility to bruising. The corresponding phenotypic abnormality is generally elicited on medical history as a report of frequent ecchymoses or bruising without adequate trauma. Also known as: Bruisability, Bruise easily, Easy bruisability, Easy bruising.