Photoaging results in which of the following skin changes?

• A. Skin wrinkling and damage due to years of sun exposure
• B. Dryness, increased discoloration, and inflammation
• C. Premature aging caused by chemical phosphate
• D. Interruption to circadian rhythms directly impacts skin cell renewal and repair.

Answer: (A)

Photoaging is the skin aging caused by long-term sun exposure. Ultraviolet light damages collagen and elastin in the dermis, leading to wrinkles, sagging, rough texture, and uneven pigment—classic signs of sun-related aging. That’s why describing wrinkles and damage from years of sun exposure is the best answer. Dryness and inflammation can occur in many conditions, but they don’t define photoaging. Premature aging from chemical phosphate isn’t a recognized mechanism, and circadian disruption affects repair in a broader sense but isn’t the defining cause of photoaging.