皮肤对刺激物的反应取决于内因和外因。当这两类因素均未超常时,皮肤反应的类型和程度取决于非个体因素(外因)和体质(内因)的易感性之间的平衡。公认刺激物的特征决定刺激反应时,剂量是十分重要的。皮肤吸收的剂量随刺激物的不同而改变。刺激物 Skin reaction to irritants depends on intrinsic and extrinsic factors. When neither of these two factors are abnormal, the type and extent of skin reactions depend on the balance between non-individual factors (exogenous) and physical (intrinsic) susceptibility. It is important that the dose be recognized as a characteristic of a stimulant when it is accepted that it stimulates the response. The amount of skin absorption varies with the stimulant. Irritant