Unverified60% confidenceDecision RuleTime unknown
止痒效果强于普通OTC外用抗组胺药，但属于处方药，需要医生处方才能获取；适合常规外用药控制不住的顽固性瘙痒
1
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60%
Confidence
Long-term
Relevance
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First Seen
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Unverified口服抗组胺药（西替利嗪、氯雷他定）对荨麻疹、过敏性瘙痒的止痒效果优于任何外用药，广泛/全身性瘙痒不应只依赖外用膏剂，应外用+口服联合81% similarUnverified口服抗组胺药（西替利嗪、氯雷他定）对荨麻疹等全身性/过敏性瘙痒的效果远优于外用药，外用止痒药主要针对局部皮损，瘙痒范围大或反复发作应考虑口服治疗80% similarUnverified外用抗组胺对荨麻疹、湿疹、日光皮炎等大面积过敏效果有限，此类应口服抗组胺（西替利嗪/氯雷他定），外用仅作局部辅助止痒78% similarUnverified外用抗组胺药膏（如苯海拉明）本身有一定光敏性且长期使用易致接触性皮炎，止痒效果不如激素稳定，不建议作为大面积或长期止痒首选77% similarUnverified属经典抗组胺类非处方（OTC）防晕药，无需处方即可购买77% similar
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