Antihistamines are systemically administered most widely in dermatology, which may be attributable to the important roles of histamines in common diseases such as urticaria and atopic eczema.

• 组胺参与荨麻疹和特应性皮炎等常见疾病的发病机制，故抗组胺药物是皮肤科最常用的系统用药之一。