Classical signs and numerous atypical forms have been described, such as annular, chancriform
, acute paronychial, palmoplantar, zosteriform, and erysipeloid (1, 3, 7-9).
Some diagnostic criteria have been described to consider a primary cutaneous compromise (30): absence of pulmonary disease history, clear history of traumatic inoculation, short incubation period (1-3 weeks) previous to the onset of the symptoms, initial chancriform
lesion (nodule o asymptomatic plaque, indurated with central ulceration), lymphadenopathy or lymphadenitis, positive precipitins, initial positive coccodiodin skin test, and negative complement fixation titers, with posterior positive very low titers, and spontaneous healing in a few weeks in immunocompetent patients.
Lesions were psoriasiform plaques in four patients, chancriform
in two and nodulo- ulcerative, crusted plaque, nodular plaque, erythematous plaque in one patient each.
Yamamoto Y Ecthyma vulgare, ecthyma gangrenosum, chancriform
Apart from typical morphology, a few atypical variants like sporotrichoid (2), paronychial (2), chancriform
lip lesions (2) and verrucous (1) were also seen.