TY - CHAP M1 - Book, Section TI - The Eczematous Reaction Pattern A1 - Burgin, Susan PY - 2021 T2 - Guidebook to Dermatologic Diagnosis AB - The eczematous reaction pattern encompasses a wide variety of primary and associated secondary lesions. Eczema may be classified morphologically according to its chronicity. Table 8.1 lists the morphologic findings of acute, subacute, and chronic eczema. Acute eczema involves the constellation of vesicles and/or bullae, erythematous macules and/or plaques, oozing, and crusting (Figure 8.1). Early erosions may be seen. Subacute eczema is defined by the presence of scaly erythematous papules and/or plaques, along with round erosions and/or round crusts (Figure 8.2A,B). In chronic eczema there are scaly, lichenified plaques that may be hyper- and/or hypopigmented (Figure 8.3). Lichenification connotes thickened skin with increased skin markings and this finding occurs secondary to scratching and rubbing. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1175058292 ER -