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Edema (American English), also spelled oedema (British English), and also known as fluid retention, dropsy and hydropsy, is the build-up of fluid in the body's tissue, [1] a type of swelling. [4] Most commonly, the legs or arms are affected. [1] Symptoms may include skin that feels tight, the area feeling heavy, and joint stiffness. [1]
Swollen brain cells may also apply pressure to the brain stem causing central nervous system dysfunction. Both cerebral edema and interference with the central nervous system are dangerous and could result in seizures, brain damage, coma, or death. [14]
Lymphedema, also known as lymphoedema and lymphatic edema, is a condition of localized swelling caused by a compromised lymphatic system. [2] The lymphatic system functions as a critical portion of the body's immune system and returns interstitial fluid to the bloodstream.
If you’ve ever had a swollen, sprained ankle or a fever from the flu, you’ve experienced it firsthand. (Flushed skin and pain are other signs of acute inflammation, according to Cleveland Clinic.)
Hemodialysis has been associated with ionic edema and cellular swelling. [ 18 ] Cerebral edema is a potentially life-threatening complication of severely decreased sodium ion concentration in the blood ( hyponatremia ).
The five cardinal signs are heat, pain, redness, swelling, and loss of function (Latin calor, dolor, rubor, tumor, and functio laesa). Inflammation is a generic response, and therefore is considered a mechanism of innate immunity, whereas adaptive immunity is specific to each pathogen. [2]
Severe bruising (harm score 2–3) may be dangerous or cause serious complications. Further bleeding and excess fluid may accumulate causing a hard, fluctuating lump or swelling hematoma. This has the potential to cause compartment syndrome in which the swelling cuts off blood flow to the tissues.
Cans that are not swollen but have thawed out are also unsafe and should be discarded, per USDA. ... So even limited amounts of time in an unheated vehicle could be dangerous. The same goes for pets.