Which skin condition is associated with overproduction of skin cells leading to scaling?

The skin condition associated with the overproduction of skin cells leading to scaling is psoriasis. In psoriasis, the rapid turnover of skin cells results in a buildup on the surface of the skin, forming thick, silvery scales and red patches that can be itchy and painful. This overproduction is primarily related to an autoimmune response, where the immune system mistakenly attacks healthy skin cells, accelerating their life cycle and causing them to accumulate.

Other skin conditions listed do not involve the same mechanism of scaling due to overproduction of skin cells. Alopecia areata is characterized by hair loss rather than skin cell overgrowth. Rosacea is primarily a vascular condition that causes redness and visible blood vessels, not scaling. Vitiligo involves loss of pigmentation and can lead to lighter patches of skin, but it does not involve scaling from the overproduction of cells. Therefore, psoriasis is the condition that clearly fits the description of overproduced skin cells leading to scaling.