Final answer:
Edema is a swelling caused by fluid in tissues that arises from inflammation of the dermis and hypodermis, leading to symptoms such as red, warm skin that is painful to touch.
Step-by-step explanation:
The dermatological response to damage such as lesions includes several reactions, one of which is edema. Edema is the medical term for swelling caused by the accumulation of fluid in tissues. When there is a localized inflammation of the dermis and hypodermis, which are layers of the skin, this can result in the skin becoming red, warm, and painful to the touch. This form of inflammation can lead to an inflamed, swollen patch of skin, sometimes found on the face, and could potentially be suppurative, meaning it may produce or discharge pus. Another type of lesion that may occur is characterized by small red nodules that often appear on the shins.