Swelling

Swelling is a term used to describe an abnormal buildup of fluid in the body tissues. Swelling can occur in any part of the body and is usually caused by an injury or infection. Swelling can be caused by trauma, an allergic reaction, an infection, or the body’s response to a foreign object. When the body experiences trauma, it begins to respond by releasing chemicals, such as histamines, which cause inflammation. This inflammation increases the permeability of the blood vessels, allowing fluids to pass from the bloodstream into the surrounding tissue. As the fluid accumulates, the tissue becomes swollen, resulting in an area of raised, discolored skin. Swelling can also be caused by an infection. Pathogenic bacteria and viruses can cause inflammation and trigger an increase in fluid levels in the area. This can lead to discomfort, pain, and fever, as well as swelling. Swelling can also be caused by an allergic reaction. Allergies are caused by an overreaction of the immune system, which results in the release of histamines and other chemicals. These chemicals cause the blood vessels to become more permeable, and fluid to accumulate in the affected area. Finally, swelling can also occur when the body responds to a foreign object, such as a splinter or a bee sting. The body perceives the object as a threat and releases chemicals to protect itself. These chemicals cause inflammation and an accumulation of fluid, resulting in swelling.