Internal bleeding in the context of "Intracranial hemorrhage"

A blunt trauma, also known as a blunt force trauma or non-penetrating trauma, is a physical trauma due to a forceful impact without penetration of the body's surface. Blunt trauma stands in contrast with penetrating trauma, which occurs when an object pierces the skin, enters body tissue, and creates an open wound. Blunt trauma occurs due to direct physical trauma or impactful force to a body part. Such incidents often occur with road traffic collisions, assaults, and sports-related injuries, and are common among the elderly who experience falls.

Blunt trauma can lead to a wide range of injuries including contusions, concussions, abrasions, lacerations, internal or external hemorrhages, and bone fractures. The severity of these injuries depends on factors such as the force of the impact, the area of the body affected, and the underlying comorbidities of the affected individual. In some cases, blunt force trauma can be life-threatening and may require immediate medical attention. Blunt trauma to the head and/or severe blood loss are the most likely causes of death due to blunt force traumatic injury.

A blunt instrument is any solid object that can be used as a hand tool, weapon or thrown projectile for striking a target, exerts impact via direct transfer of force and momentum, and has no sharp point or edge on the contact surface with the target. A blunt weapon may be contrasted with edged weapons in that the former causes mostly closed trauma instead of open incisions or puncture wounds, and are also different to kinetic projectiles such as bullets or arrows, whose speed and kinetic energy are so significant that they cause penetrating trauma often with cavitations even if the projectile is of a blunt shape.

Blunt instruments typically inflict blunt force trauma, causing contusions, fractures and internal bleeding while leaving the skin intact, although they occasionally can produce irregular lacerations by shearing. Depending on the parts of the body struck, organs may be ruptured or otherwise damaged, and attacks with a blunt instrument may be fatal, especially when striking vital areas such as the head, neck and chest.

Bleeding, hemorrhage, haemorrhage or blood loss, is blood escaping from the circulatory system from damaged blood vessels. Bleeding can occur internally, or externally either through a natural opening such as the mouth, nose, ear, urethra, vagina, or anus, or through a puncture in the skin.Hypovolemia is a massive decrease in blood volume, and death by excessive loss of blood is referred to as exsanguination. Typically, a healthy person can endure a loss of 10–15% of the total blood volume without serious medical difficulties (by comparison, blood donation typically takes 8–10% of the donor's blood volume). The stopping or controlling of bleeding is called hemostasis and is an important part of both first aid and surgery.

Ebola, also known as Ebola virus disease (EVD) and Ebola hemorrhagic fever (EHF), is a viral hemorrhagic fever in humans and other primates, caused by ebolaviruses. Symptoms typically start anywhere between two days and three weeks after infection. The first symptoms are usually fever, sore throat, muscle pain, and headaches. These are usually followed by vomiting, diarrhoea, rash and decreased liver and kidney function, at which point some people begin to bleed both internally and externally. Ebola has a mortality rate of 25–90% depending on treatment, and averages a mortality rate of approximately 50%. Death is often due to shock from fluid loss, and typically occurs between 6 and 16 days after the first symptoms appear. Early treatment of symptoms increases the survival rate considerably compared to late start. An Ebola vaccine was approved by the US FDA in December 2019.

The virus spreads through direct contact with body fluids, such as blood from infected humans or other animals, or from contact with items that have recently been contaminated with infected body fluids. There have been no documented cases, either in nature or under laboratory conditions, of spread through the air between humans or other primates. After recovering from Ebola, semen or breast milk may continue to carry the virus for anywhere between several weeks to several months. Fruit bats are believed to be the natural host of the virus; they are able to spread the virus without being affected by it. The symptoms of Ebola may resemble those of several other diseases, including malaria, cholera, typhoid fever, meningitis and other viral hemorrhagic fevers. Diagnosis is confirmed by testing blood samples for the presence of viral RNA, viral antibodies or the virus itself.