What is the term for redness of the skin resembling sunburn caused by radiation dose?

What is the term for redness of the skin resembling sunburn caused by radiation dose?

• A. Erythema
• B. Dermatitis
• C. Hyperemia
• D. Eczema

Answer: (A)

Redness after exposure to ionizing radiation is called erythema. It’s the earliest skin reaction from radiation, caused by dilation and increased permeability of superficial blood vessels, producing a sunburn-like reddening within hours to days depending on the dose. This term is specific to radiation effects. Dermatitis would be inflammation from irritation or an allergic reaction, hyperemia is a general term for increased blood flow that isn’t specific to radiation, and eczema is a chronic inflammatory skin condition with itching and scaling.

Redness after exposure to ionizing radiation is called erythema. It’s the earliest skin reaction from radiation, caused by dilation and increased permeability of superficial blood vessels, producing a sunburn-like reddening within hours to days depending on the dose. This term is specific to radiation effects. Dermatitis would be inflammation from irritation or an allergic reaction, hyperemia is a general term for increased blood flow that isn’t specific to radiation, and eczema is a chronic inflammatory skin condition with itching and scaling.