“…Finally, several reports note that secondary perforating dermatoses can be mistaken for other entities, including squamous cell carcinoma [ 4 ], psoriasis [ 97 , 98 ], a nevus [ 99 ], and soft tissue malignancy [ 100 , 101 ]. Necrotizing infundibular crystalline folliculitis [ 102 , 103 , 104 ] can mimic perforating gout, having a cup-shaped surface (due to a distended follicular infundibulum) containing needle-like crystals.…”