Abstract：
BACKGROUND: Although well known in clinical practice, research in lichen planus pigmentosus and related dermal pigmentary diseases is restricted due to lack of consensus on nomenclature and disease definition.
OBJECTIVE: Delphi exercise to define and categorise acquired dermal pigmentary diseases.
METHODS: Core areas were identified including disease definition, etiopathogenesis, risk factors, clinical features, diagnostic methods, treatment modalities and outcome measures. The Delphi exercise was conducted in three rounds.
RESULTS: Sixteen researchers representing 12 different universities across India and Australia agreed to be part of this Delphi exercise. At the end of three rounds, a consensus of >80% was reached on usage of the umbrella term \'acquired dermal macular hyperpigmentation\'. It was agreed that there were minimal differences, if any, among the disorders previously defined as ashy dermatosis, erythema dyschromicum perstans, Riehl\'s melanosis and pigmented contact dermatitis. It was also agreed that lichen planus pigmentosus, erythema dyschromicum perstans and ashy dermatosis did not differ significantly apart from the sites of involvement, as historically described in the literature. Exposure to hair colours, sunlight and cosmetics was associated with these disorders in a significant proportion of patients. Participants agreed that both histopathology and dermatoscopy could diagnose dermal pigmentation characteristic of acquired dermal macular hyperpigmentation but could not differentiate the individual entities of ashy dermatosis, erythema dyschromicum perstans, Riehl\'s melanosis, lichen planus pigmentosus and pigmented contact dermatitis.
CONCLUSIONS: A wider consensus involving representatives from East Asian, European and Latin American countries is required.
CONCLUSIONS: Acquired dermal macular hyperpigmentation could be an appropriate conglomerate terminology for acquired dermatoses characterised by idiopathic or multifactorial non-inflammatory macular dermal hyperpigmentation.
OBJECTIVE: Delphi exercise to define and categorise acquired dermal pigmentary diseases.
METHODS: Core areas were identified including disease definition, etiopathogenesis, risk factors, clinical features, diagnostic methods, treatment modalities and outcome measures. The Delphi exercise was conducted in three rounds.
RESULTS: Sixteen researchers representing 12 different universities across India and Australia agreed to be part of this Delphi exercise. At the end of three rounds, a consensus of >80% was reached on usage of the umbrella term \'acquired dermal macular hyperpigmentation\'. It was agreed that there were minimal differences, if any, among the disorders previously defined as ashy dermatosis, erythema dyschromicum perstans, Riehl\'s melanosis and pigmented contact dermatitis. It was also agreed that lichen planus pigmentosus, erythema dyschromicum perstans and ashy dermatosis did not differ significantly apart from the sites of involvement, as historically described in the literature. Exposure to hair colours, sunlight and cosmetics was associated with these disorders in a significant proportion of patients. Participants agreed that both histopathology and dermatoscopy could diagnose dermal pigmentation characteristic of acquired dermal macular hyperpigmentation but could not differentiate the individual entities of ashy dermatosis, erythema dyschromicum perstans, Riehl\'s melanosis, lichen planus pigmentosus and pigmented contact dermatitis.
CONCLUSIONS: A wider consensus involving representatives from East Asian, European and Latin American countries is required.
CONCLUSIONS: Acquired dermal macular hyperpigmentation could be an appropriate conglomerate terminology for acquired dermatoses characterised by idiopathic or multifactorial non-inflammatory macular dermal hyperpigmentation.
摘要：
背景：尽管在临床实践中众所周知，由于对命名法和疾病定义缺乏共识，因此对色素扁平苔藓和相关真皮色素疾病的研究受到限制。
目的：Delphi练习对获得性真皮色素疾病进行定义和分类。
方法：确定了核心领域，包括疾病定义，病因，危险因素，临床特征,诊断方法,治疗方式和结果措施。Delphi演习分三轮进行。
结果：代表印度和澳大利亚12所不同大学的16名研究人员同意参加本次德尔福练习。在三轮结束时，在使用“获得性皮肤黄斑色素沉着过度”这一总称上达成了>80%的共识。人们一致认为差异很小，如果有的话,在先前定义为灰白色皮肤病的疾病中，紫癜性红斑，Riehl黑变病和色素性接触性皮炎。人们还一致认为色素性扁平苔藓，除受累部位外，失色红斑和灰质皮肤病没有显着差异，正如文献中所描述的那样。暴露于头发的颜色，在相当比例的患者中,阳光和化妆品与这些疾病有关.参与者一致认为，组织病理学和皮肤镜检查可以诊断获得性真皮黄斑色素沉着的真皮色素沉着特征，但不能区分灰白色皮肤病的个体实体。紫癜性红斑，Riehl的黑变病,色素性扁平苔藓和色素性接触性皮炎。
结论：涉及东亚代表的更广泛共识，欧洲和拉丁美洲国家是必需的。
结论：获得性真皮黄斑色素沉着可能是以特发性或多因素非炎性黄斑真皮色素沉着为特征的获得性皮肤病的一个合适的聚集术语。
目的：Delphi练习对获得性真皮色素疾病进行定义和分类。
方法：确定了核心领域，包括疾病定义，病因，危险因素，临床特征,诊断方法,治疗方式和结果措施。Delphi演习分三轮进行。
结果：代表印度和澳大利亚12所不同大学的16名研究人员同意参加本次德尔福练习。在三轮结束时，在使用“获得性皮肤黄斑色素沉着过度”这一总称上达成了>80%的共识。人们一致认为差异很小，如果有的话,在先前定义为灰白色皮肤病的疾病中，紫癜性红斑，Riehl黑变病和色素性接触性皮炎。人们还一致认为色素性扁平苔藓，除受累部位外，失色红斑和灰质皮肤病没有显着差异，正如文献中所描述的那样。暴露于头发的颜色，在相当比例的患者中,阳光和化妆品与这些疾病有关.参与者一致认为，组织病理学和皮肤镜检查可以诊断获得性真皮黄斑色素沉着的真皮色素沉着特征，但不能区分灰白色皮肤病的个体实体。紫癜性红斑，Riehl的黑变病,色素性扁平苔藓和色素性接触性皮炎。
结论：涉及东亚代表的更广泛共识，欧洲和拉丁美洲国家是必需的。
结论：获得性真皮黄斑色素沉着可能是以特发性或多因素非炎性黄斑真皮色素沉着为特征的获得性皮肤病的一个合适的聚集术语。
