Erythema is defined as the redness of the skin.
Dilated capillaries cause erythema, which can have many causes: cold and hot temperatures, stress, exercise, spicy foods or irritants like sunburns. The most common cause of Erythema is heat or cold exposure.
Erythema can also be caused by skin disorders, which are red patches on the skin that remain after the erythema has cleared: acne, rosacea, and eczema.
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