Dirt-Like Hyperpigmented Plaques on the Neck and Linea Alba of a 12-Year-Old Girl

Terra firma‐forme dermatosis: a systematic review

“…The title and abstract of the 102 items were screened, and 69 were considered eligible for full‐text assessment. Of the 69 studies, 64 were included in the systematic review 1–63 . The studies were published between 1987 and 2020.…”

“…The dermoscopic clues, described in 18 patients, are large polygonal brown clods, interrupted in the furrows and arranged linearly, to evoke a mosaic pattern. In this regard, 77.8% of the articles described “brownish scales” 4,5,13,20,25,26 as opposed to “brownish pigmentation” or “brown clods” used by the remaining 22.2% of papers 27–30 …”

“…Overall, the records of 22 patients reported a diagnostic pitfall prior to the diagnosis of TFFD (Table 4). The two most common misdiagnoses were AN 14,25,35,39 and mycosis 11,16,27,34 (each accounting for 31.8% of cases), followed by eczema (including atopic eczema in 1 case, 18.2%), 14,47 lichen simplex chronicum 46 (4.5%), vulgar ichthyosis 16 (4.5%), pseudo‐acanthosis nigricans 30 (4.5%), and atypical nevus 48 (4.5%).…”