What skin condition is characterized by overproduction of keratin leading to rough, dry patches?

Psoriasis is characterized by the overproduction of keratin, which leads to the formation of rough, dry patches on the skin. This condition is an autoimmune disorder where skin cells multiply rapidly, resulting in thick, scaly plaques that can appear red and inflamed. The increased keratin production disrupts the normal shedding process, causing a buildup at the surface of the skin.

Understanding psoriasis is essential for skin analysis because it requires a different treatment approach compared to other skin conditions, and recognizing its distinct features can prevent misdiagnosis. Other conditions mentioned, such as dermatitis, rosacea, and acne, do not have the same mechanism of keratin overproduction or are characterized by different symptoms and skin changes.