What condition is characterized by persistent dry skin and decreased sebum production?

Asteatosis is characterized by persistent dry skin and decreased sebum production. This condition occurs when the skin loses its natural oils, leading to a lack of moisture. The reduction in sebum, which is critical for maintaining skin hydration and barrier function, results in the skin becoming dry, flaky, and possibly exhibiting signs of irritation.

In contrast, psoriasis is a chronic autoimmune condition that leads to the rapid growth of skin cells resulting in scaling, while eczema typically presents with inflammation, redness, and itching. Dermatitis is a general term for skin inflammation, which can arise from various causes but does not specifically attribute to low sebum production. Therefore, asteatosis specifically identifies the condition associated with dry skin stemming from reduced sebum levels.