A 60-year-old healthy man presented with sudden onset of asymptomatic, brown-black macules over his feet soles. Lesions were randomly distributed with relative sparing of instep, pinpoint to a few millimeters in size, non-blanchable, and non-tender (Figure 1). Attempts to wipe them off with alcohol swab were unsuccessful. Dermoscopy (DermLite DL200 hybrid, ×10, 3Gen, San Juan Capistrano, California) revealed streaks of orange-brown pigment with ridge enhancement (Figure 2). The patient had the habit of walking barefoot in his dairy shop, surrounded by ample foliage, and had noticed low flying winged insects during this rainy season. A final diagnosis of Cydnidae (burrower bug) pigmentation was established, supported by a history of sudden onset of asymptomatic lesions and dermoscopic examination.
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机译：一个60岁的健康男子，突然出现了无症状，棕色黑色斑块的鞋底。病变随着脚背的相对备件而随机分布，定位到几毫米的尺寸，非吹批准和非嫩（图1）。尝试用酒精拭子擦掉它们是不成功的。 Dermoscopy（Dermlite DL200 Hybrid，×10，3Gen，San Juan Capistrano，California）揭示了橙色棕色颜料的条纹，脊髓增强（图2）。患者习惯赤脚在他的奶制品店徒步走路，周围的叶子包围，并且在这个雨季期间已经注意到了低飞翅膀的昆虫。建立了对Cydnidae（Burrower Bug）色素沉着的最终诊断，由无症状病变突然发作和皮肤检查的历史支持。
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