ABSTRACT
Dermoscopic examination of flexural lesions typically shows a white background along with reddish furrows having a star-like, irregular, or, more frequently, linear shape. Lesions involving non-intertriginous areas are usually typified by linear, irregular, or star-like erosions, as well as a reddish background, whitish scales and/or white/yellowish crusts. Fixed drug eruption (FDE) is an adverse mucocutaneous drug reaction characterized by site-specific recurrence of lesions on systemic exposure to the inciting drug. FDE presents as oval or round, dusky red macules or patches along with a burning sensation. Inflammatory lesions usually feature just non-specific dermoscopic features, such as vessels, haemorrhages and/or purple background. The variability in the colour results from the distribution of dermal pigment at various levels in the dermis. The term mastocytosis encompasses a group of disorders typified by mast cell proliferation and accumulation in one or more organs, with the skin being the most commonly affected site.
