Alopecic and aseptic nodule of the scalp is a rare entity characterized by the presence of nodules or cysts with sterile punctured material and negative cultures accompanied by nonscarring alopecia in the scalp of young men. We describe a case in which an 11-year-old girl presented with a nodular, fluctuant, round lesion on the vertex with localized alopecia. High-resolution ultrasound showed a hypoechoic lesion with increased flow on Doppler imaging and culture of the citrine-yellowish material obtained by puncture was negative. The patient showed complete clinical response to treatment with topical indomethacin.
Keywords: alopecia; aseptic nodule of the scalp; pseudocyst of the scalp.
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