Which statement best defines erythema?

Which statement best defines erythema?

• A. Reddening of the skin
• B. Burn of the cornea
• C. Transparent layer behind iris
• D. Black center of the eye

Answer: (A)

Erythema refers to reddening of the skin caused by increased blood flow in the superficial vessels, often from heat, inflammation, or UV exposure. In non-ionizing radiation contexts, it’s a common early skin response to UV or infrared exposure. The other options describe parts or injuries of the eye—such as a corneal burn (eye injury), the lens behind the iris (a transparent structure), or the pupil (the black center)—which do not describe skin reddening. So the statement that best defines erythema is the reddening of the skin.

Erythema refers to reddening of the skin caused by increased blood flow in the superficial vessels, often from heat, inflammation, or UV exposure. In non-ionizing radiation contexts, it’s a common early skin response to UV or infrared exposure. The other options describe parts or injuries of the eye—such as a corneal burn (eye injury), the lens behind the iris (a transparent structure), or the pupil (the black center)—which do not describe skin reddening. So the statement that best defines erythema is the reddening of the skin.