What`s the diagnosis? The tricky things we dermatologists should know = What`s the diagnosis? The tricky things we dermatologists should know

다국어 초록 (Multilingual Abstract)

There are so many similar pigmentary diseases, thus differential diagnosis is frequently difficult. However, for proper treatment, accurate diagnosis is important. Clinically and/or histologically mimicking pigmentary diseases including lichen planus pigmentosus/ashy dermatosis, acanthosis nigricans/confluent and reticulated papillomatosis, melasma/Rhiel`s dermatosis, Becker`s nevus/ erythromelanosis follicularis faciei and colli, idiopathic guttate hypomelanosis/hypopigmented hyperkeratosis, and other interesting pigmentary diseases will be discussed. The main clinical and histopathologic findings of these diseases and important differential diagnostic points for accurate diagnosis will be illustrated.