夏天不怕晒黑就不用防晒吗？警惕这个病找上门

Core Viewpoint - The article emphasizes the importance of sun protection due to the high ultraviolet (UV) index across many regions, highlighting the risks of sunburn and sun-induced skin conditions like solar dermatitis [1][2]. Group 1: Understanding Solar Dermatitis - Solar dermatitis is described as a "war" between skin and sunlight, leading to inflammation, redness, pain, and potentially blisters and peeling when exposed to strong UV rays [3]. - There are two main types of solar dermatitis: sunburn, which is a phototoxic reaction affecting anyone exposed to excessive sunlight, and polymorphic light eruption, an allergic reaction more common in sensitive individuals [4]. Group 2: Common Triggers of Solar Dermatitis - The primary triggers for solar dermatitis include excessive UV exposure, with UVA penetrating deep into the skin and UVB being more intense in summer [5]. - Contact with photosensitive substances such as certain foods, medications, and cosmetic ingredients can also provoke reactions [6]. - Individuals with weakened skin barriers, such as those with sensitive skin or eczema, are at higher risk [7]. - Genetic factors may predispose some individuals to heightened sensitivity to UV radiation [8]. Group 3: Prevention Strategies - Effective prevention of solar dermatitis involves proper skin protection, especially for those with a history of the condition, including using umbrellas, wide-brimmed hats, sunglasses, long clothing, and sunscreen [9]. - It is advisable to avoid outdoor activities during peak UV hours from 10:00 AM to 2:00 PM [10]. - Limiting sun exposure to no more than two hours while taking protective measures is recommended [11]. - After swimming, it is important to wash the body with warm water and gentle cleansers [12]. Group 4: Response to Symptoms - For mild symptoms, cold compresses can alleviate discomfort, and it is crucial to avoid further sun exposure [14]. - Small blisters may resolve on their own, while larger ones should be treated by healthcare professionals [14]. - In cases of severe symptoms like headaches or nausea, immediate medical attention is necessary for allergy treatment [15].