L55-L59: Radiation-related disorders of the skin and subcutaneous tissue

L56: Other acute skin changes due to ultraviolet radiation

The skin changes included in this group results primarily from exposure to ultraviolet (UV) radiation, most commonly from the sun, but also from artificial sources like tanning beds. These conditions vary but generally involve acute (short-term) changes to the skin. Signs may include redness, soreness, and blistering, similar to symptoms of a sunburn. In some cases, there may also be changes in skin color or texture. These skin changes can occur on any part of the body exposed to UV radiation and usually appear within a few hours to a few days after exposure. The progression and severity of these conditions largely depend on the extent and duration of UV exposure, along with individual factors like skin type and overall health. The skin is the primary system affected by these conditions, but severe cases can impact body temperature regulation and might lead to dehydration if not properly managed.