What condition is described by inflammation of body tissue characterized by fever, swelling, redness, and pain?

The condition characterized by inflammation of body tissue, which includes symptoms such as fever, swelling, redness, and pain, is cellulitis. Cellulitis typically arises due to a bacterial infection that affects the deeper layers of the skin and the underlying tissue. The fever is a systemic response to infection, while swelling, redness, and pain are local manifestations of the body's inflammatory response to the presence of pathogens.

The other options describe different medical conditions that do not fit the criteria for this particular response. Fibroids refer to benign tumors that grow in the uterus and are not associated with an inflammatory response. Erythema denotes redness of the skin, usually from increased blood flow, but it does not encompass the systemic symptoms of fever and pain associated with inflammation. Paroxysmal nocturnal dyspnea is a condition associated with shortness of breath that occurs while lying down, typically in heart failure, and does not relate to inflammation in body tissue. Thus, cellulitis is the most appropriate answer regarding the described symptoms and condition.