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Blood-laced mucus from the sinus or nose area can sometimes be misidentified as symptomatic of hemoptysis (such secretions can be a sign of nasal or sinus cancer, but also a sinus infection). Extensive non-respiratory injury can also cause one to cough up blood. Cardiac causes like congestive heart failure and mitral stenosis should be ruled ...
It is a settling of the blood in the lower, or dependent, portion of the body postmortem, causing a purplish red discoloration of the skin. When the heart stops functioning and is no longer agitating the blood, heavy red blood cells sink through the serum by action of gravity. The blood travels faster in warmer conditions and slower in colder ...
Blood squirt (blood spurt, blood spray, blood gush, or blood jet) is a projectile expulsion of blood when an artery is ruptured. Blood pressure causes the blood to bleed out at a rapid, intermittent rate in a spray or jet , coinciding with the pulse , rather than the slower, but steady flow of venous bleeding.
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). [3] The stopping or controlling of bleeding is called hemostasis and is an important part of both first aid and surgery.
Consequently, the unclotted blood bleeds into the skin and other organs, leading to a red or black patchy rash and to hematemesis (vomiting blood) or hemoptysis (coughing up blood). The rash may cause bumps on the skin that look somewhat like insect bites, usually red, sometimes white in the centre. [citation needed]
Telangiectasias (from tel- 'end' angi- 'blood vessel' and ectasia 'the expansion of a hollow or tubular organ'), also known as spider veins, are small dilated blood vessels [1] that can occur near the surface of the skin or mucous membranes, measuring between 0.5 and 1 millimeter in diameter. [2]
Brown recluse bites may cause an area of dead skin that's called an eschar, which typically sloughs off and leaves an ulcer behind. Other symptoms: Unlike black widow bites, brown recluse bites ...
Disseminated intravascular coagulation (DIC) is a condition in which blood clots form throughout the body, blocking small blood vessels. [1] Symptoms may include chest pain, shortness of breath, leg pain, problems speaking, or problems moving parts of the body. [1] As clotting factors and platelets are used up, bleeding may occur. [1]