What condition that causes reddened skin is a contraindication for chemical peels?

The condition that causes reddened skin and serves as a contraindication for chemical peels is erythema. Erythema indicates inflamed and sensitive skin, which can be exacerbated by the application of chemicals used in peels. Since chemical peels work by removing layers of skin to promote regeneration and improve texture, using them on already reddened and inflamed skin could lead to further irritation, adverse reactions, or complications.

While dermatitis, psoriasis, and acne vulgaris may also present with reddened skin, erythema is more indicative of a generalized skin irritation state. Therefore, the presence of erythema would signal to the practitioner that the skin is currently compromised and may not tolerate the distress chemical peels can impose. In contrast, other conditions like acne vulgaris might be treated with caution rather than outright contraindication depending on the severity and specific characteristics of the lesions.