天津中医药大学第一附属医院儿科副主任韩耀巍表示，过敏具有明显的遗传倾向，如果父母一方或 双方有过敏史，孩子发生过敏的风险会显著升高。"但遗传只是'潜力'，真正让这种'潜力'变成现实的， 是后天环境的变化。"韩耀巍说。 新华社天津1月8日电（记者张建新、栗雅婷）如今，过敏性鼻炎、哮喘、食物过敏等问题在儿童中 越来越常见。专家表示，这种趋势并非偶然，而是遗传、环境、生活方式等多重因素共同作用的结果。 专家表示，现代家庭过度清洁，消毒剂、杀菌产品频繁使用，让孩子在成长早期接触细菌、病毒等 微生物的机会大幅减少。免疫系统就像需要"实战训练"的军队，小时候没接触过少量无害微生物，就无 法学会区分"敌人"（有害病原体）和"朋友"（无害物质），长大后遇到花粉、尘螨等常见物质，也会过 度紧张发起攻击，引发过敏反应。 同时，城市化进程让不少孩子远离自然环境，户外活动减少，接触土壤、植物中的有益微生物的机 会变少，进一步加剧了免疫系统的"发育失衡"。韩耀巍介绍，环境刺激变多也会引发孩子过敏反应，城 市里花粉、尘螨、霉菌等吸入性过敏原更密集，宠物毛发、化妆品染料等接触性过敏原也更常见。 PM2.5、有害气体等空气污染则会刺激孩子娇 ...

Group 1 - The article highlights that summer is also a peak season for allergies, contrary to the common belief that spring is the highest season for allergies [1] - It discusses the concept of photosensitivity, where certain foods and medications can exacerbate UV allergies, particularly in individuals with fair skin and a family history of such allergies [2][3] - Key preventive measures against UV allergies include avoiding sun exposure during peak hours, using broad-spectrum sunscreen, and checking medication labels for photosensitivity warnings [4] Group 2 - The article emphasizes the rise of mold allergies during the rainy season, particularly affecting children, who may be misdiagnosed with colds [5] - It notes that mold thrives in humidity levels of 60%-80%, which can significantly increase during the rainy season, leading to higher concentrations in home environments [5] - The article clarifies misconceptions about allergies, stating that they are not a sign of low immunity but rather an overreaction to harmless substances [6] Group 3 - It mentions that while some children may experience a reduction in allergy symptoms as they age, this does not guarantee complete resolution of allergies [7] - The progression of allergies in children is described as a "four-part series," starting from eczema in infancy to asthma in adolescence [8] - Early intervention is crucial, as untreated allergies in children can worsen or affect other organs [9] Group 4 - The article warns that severe allergic reactions can be life-threatening, primarily caused by food and drug allergies, which can develop rapidly [11] - It discusses the importance of maintaining appropriate temperature and humidity levels to prevent allergies, noting that extremes in either can trigger allergic reactions [12]