Atopic dermatitis (AD) is the most common chronic inflammatory skin disease causing itchiness. It is characterized by a damaged skin barrier, a skin inflammation, and an imbalanced skin microbiome. As for the visible signs, redness, erythema and scaly patches are most common. Even in patients with a typical distribution and morphology of lesions, the appearance of AD varies based on skin colour. Erythema in darker skin is more likely to appear violaceous or may be missed completely.