Sensitive skin is highly frequent in extrinsic atopic dermatitis and correlates with disease severity markers but not necessarily with skin barrier impairment

Sensitive skin is characterized by the sensations, such as tingling, pricking, heat, burning, pain, or itch with or without erythema. Because of its subjective feeling property, self-assessment may be one of the valuable methods for evaluation of sensitive skin. However, more accurate parameters or objective factors are required for its evaluation [1]. Lactic acid stinging test (LAST) has been widely accepted as an assessment of sensitive skin [2], although the percentage of lactic acid and the evaluation method are different among studies.