Correlation of scabies
Dark-brown triangular structures
A small brown triangular structure (“delta-wing jet sign”) located at the end of a subtle whitish curved line is highly specific of scabies (add specificity and reference). Histopathologically, the brown triangle corresponds to the pigmented anterior part of the parasite (figure). The whitish curved line reveals the burrow of the mite (Argenziano et al., 1997b).