fotosensitiviteettiä

Fotosensitiviteetti, known scientifically as photosensitivity, refers to an exaggerated or abnormal response of the skin to exposure to ultraviolet (UV) radiation, primarily from sunlight. This condition can manifest in various ways, ranging from mild rashes to severe blistering reactions. The underlying cause of fotosensitiviteetti is often an interaction between a specific substance and UV light. This substance can be an internal compound produced by the body, such as in certain autoimmune diseases like lupus, or an external agent like medications, cosmetics, or even certain plant compounds.

When the skin is exposed to UV radiation in the presence of these photosensitizing agents, a chemical reaction occurs that triggers an inflammatory response. This can lead to symptoms like redness, itching, burning, swelling, and sometimes even hives or eczema-like lesions. The severity and type of reaction depend on the individual's sensitivity, the concentration of the photosensitizing agent, and the duration and intensity of UV exposure. Diagnosing fotosensitiviteetti typically involves a thorough medical history, a physical examination, and sometimes patch testing or photoprovocation tests to identify the causative agent. Management strategies focus on avoiding triggers, using broad-spectrum sunscreens, wearing protective clothing, and, in some cases, treating the underlying condition or discontinuing the offending medication.