Which age group is most commonly affected by xerosis?

Xerosis, commonly known as dry skin, is most frequently observed in older adults due to several physiological changes that occur with aging. As people age, the skin undergoes a reduction in sebaceous (oil-producing) gland activity, leading to decreased oil production and moisture retention. Additionally, older skin tends to have a slower turnover rate of cells, which can contribute to the appearance of dryness and flaking. Environmental factors, such as lower humidity and increased exposure to UV radiation over a lifetime, can also exacerbate this condition.

In contrast, children and young adults typically have more resilient skin with higher oil production and better moisture retention, making them less susceptible to xerosis. Middle-aged adults might experience some dryness, particularly related to lifestyle or environmental factors, but it is not as prevalent or pronounced as in the older adult population. This understanding of the physiological differences and skin characteristics among various age groups clarifies why older adults are most commonly affected by xerosis.