plaque-like, annular and ulcerated lesions are also observed. Only three cases of granulomatous secondary syphilis with annular lesions have been reported, but no case with only facial lesions has been reported. We describe a case of granulomatous secondary syphilis with annular plaques limited to the face, clinically and histolopathogically indistinguishable from facial annular sarcoidosis. Plasma cells were present, ranging in number from rare to numerous, and served as an important diagnostic clue for secondary syphilis with atypical features.
Erythema papulatum centrifugum (EPC), also known as erythema papulosa semicircularis recidivans (EPSR), is distinct from eczema and other well‐described figurate erythemas characterised by annular erythematous lesions. We report 7 cases of EPC and propose new diagnostic criteria including the following: (i) EPC is characterised by single or multiple recurrent expanding annular or semi annular erythema with central regression, surrounded by tiny red papules; (ii) the lesions regularly relapse and resolve; (iii) the histopathologic feature shows superficial perivascular inflammation with or without mild inflammation around sweat glands in the mid dermis and (iv) patients lack other associated cutaneous or internal abnormalities.
Because sterilization of imaging probes is commonly impossible, the issue of probe contamination and cross‐infection becomes an issue when using dermoscopy in the clinic. We describe a simple modification to reduce cross‐infection during dermoscopy.
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