What is one common side effect of overexposure to UV radiation?

One common side effect of overexposure to UV radiation is sunburn. When the skin is exposed to UV rays for an extended period, it can cause damage to the skin cells, leading to inflammation, redness, and pain, which are characteristic signs of sunburn. This reaction is the body's defense mechanism against UV damage, signaling that the skin has been overexposed.

In contrast, increased tanning, while it may occur following some UV exposure, is not a side effect of overexposure but rather a regular response of the skin to attempt to protect itself from further damage. Moisturized skin and enhanced skin elasticity are not associated with overexposure to UV radiation; instead, they can be characteristics of healthy skin or achieved through proper skincare, but not through UV exposure, which tends to lead to dryness and aging.