Collagenosis, reactive perforating. detail enlargement: 0.5-1.5 cm large, indurated, livid papules and plaques on the upper back, partly with hyperkeratotic plug, partly confluent.
Collagenosis, reactive perforating. 12-month-old female patient: Itchy papules with a central depression and a hyperkeratotic clot on the upper back and the upper arm extensor sides.
Collagenosis, reactive perforating. detail enlargement: solitary, 0.3-1.3 cm large, red papules with a coarse central horn plug. the smaller papules correspond to an early stage of the disease.
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