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An ecchymosis is a hematoma of the skin larger than 10 mm. [2] They may occur among and or within many areas such as skin and other organs , connective tissues , bone , joints and muscle . A collection of blood (or even a hemorrhage ) may be aggravated by anticoagulant medication (blood thinner).
A bruise, also known as a contusion, is a type of hematoma of tissue, [3] the most common cause being capillaries damaged by trauma, causing localized bleeding that extravasates into the surrounding interstitial tissues. Most bruises occur close enough to the epidermis such that the bleeding causes a visible discoloration.
Cerebral contusion (Latin: contusio cerebri), a form of traumatic brain injury, is a bruise of the brain tissue. [2] Like bruises in other tissues, cerebral contusion can be associated with multiple microhemorrhages, small blood vessel leaks into brain tissue. Contusion occurs in 20–30% of severe head injuries. [3]
A contusion is the discoloration of the skin, which results from underlying muscle fibers and connective tissue being crushed. This can happen in a variety of ways such as a direct blow to the skin, or a fall taken against a hard surface. The discoloration in the skin is present when blood begins to pool around the injury.
Contusion — Also known as a bruise, this is a blunt trauma damaging tissue under the surface of the skin. Crushing Injuries — Caused by a great or extreme amount of force applied over a period of time. The extent of a crushing injury may not immediately present itself. Ballistic Trauma — Caused by a projectile weapon such as a firearm ...
Patients may develop periorbital ecchymosis ("raccoon eyes"). [ citation needed ] Patients with subgaleal hematoma may present with hemorrhagic shock given the volume of blood that can be lost into the potential space between the skull periosteum and the scalp galea aponeurosis, which has been found to be as high as 20-40% of the neonatal blood ...
It refers to one of the three descriptive types of hematoma differentiated by size, the other two being ecchymosis (>1cm in diameter) and purpura (4 to 10mm in diameter). The term is typically used in the plural (petechiae), since a single petechia is seldom noticed or significant.
Intracranial hematoma causes an increase in pressure on the brain and requires immediate medical attention. [5] cerebral contusion – a bruise to the brain tissue as a result of trauma. Contusions are local in nature, separating them from concussions. [5]