... lesion and noting the amount of blanching that occurs. Granulomas often have an opaque to transparent, brown-pink "apple jelly" appearance on diascopy. Figure 52-11 Chapter 052. Approach ... freckles are accentuated, while dermal pigment such as postinflammatory hyperpigmentation fades under a Wood's light. Vitiligo (Fig. 52-12) appears totally white under a Wood's lamp, and ... (eds): Fitzpatrick's Dermatology in General Medicine, 7th ed. New York, McGraw-Hill, 2008 Urticaria. Discrete and confluent, edematous, erythematous papules and plaques are characteristic...