Graphic number 2 shows several red-brown lesions on the front thorax and abdomen. The papules have an annular shape, are distributed individually, and vary significantly in size. Their size can be estimated between 1 and 10 mm. With those characteristics in mind, it is possible to include erythema multiforme, nummular eczema, and secondary syphilis in the differential diagnosis.
Although round lesions are usually associated with nummular eczema (Ely & Stone, 2010b), that condition needs to be excluded because the size of lesions is smaller than 1 cm (LeBlond, Brown, & DeGowin, 2009). Finally, erythema multiforme can be excluded because ...
