12/19/2025
What causes the appearance of age spots?
Age spots, or solar lentigines, are primarily caused by prolonged ultraviolet (UV) sun exposure and the natural aging process, which leads to melanin (skin pigment) cells overproducing pigment, creating dark spots on sun-exposed areas like hands, face, and shoulders, though genetics, hormonal changes, and certain medications can also play a role. They are essentially your skin's response to accumulated sun damage, resulting in clusters or clumps of excess pigment.
Sun Exposure (UV Rays): The biggest factor; UV light triggers melanocytes (pigment cells) to produce more melanin as a protective mechanism, leading to dark spots.
Aging: Over time, skin cell turnover slows, and pigment cells can become more active, contributing to their appearance.
Genetics: Some people are predisposed to developing age spots due to hereditary factors.
Hormonal Fluctuations: Changes, especially in women, can sometimes trigger pigmentation issues like age spots.
Medications: Certain drugs, including some antibiotics, hormones (estrogens), and anticonvulsants, can increase sun sensitivity and pigmentation.
