Final answer:
If you see a reddened area on a person's skin, it is likely a sign of inflammation. Inflammation is the body's response to infections or injuries and is caused by chemicals that are released when the skin or other tissues are damaged.
Step-by-step explanation:
If you see a reddened area on a person's skin, it is likely a sign of inflammation. Inflammation is the body's response to infections or injuries and is caused by chemicals that are released when the skin or other tissues are damaged. These chemicals cause nearby blood vessels to dilate, increasing blood flow to the damaged area and making it appear red and slightly warm.