Necrotizing infundibular crystalline folliculitis manifesting as a perforating mucinosis: a case report.

: Necrotizing infundibular crystalline folliculitis (NICF) is a rare entity manifesting as waxy folliculocentric papules comprised of filamentous birefringent crystalline deposits. We report a case of NICF in an 85-year-old man, presenting as gritty, cream-colored, and erythematous papules across the midline back. Biopsy demonstrated a pale plug comprised of copious mucin.

Tacrolimus ointment 0.1% in the treatment of nickel-induced allergic contact dermatitis.

Background: Tacrolimus is a macrolactam that prevents the transcription of messenger RNA for various inflammatory cytokines in both helper T cells (types 1 and 2) (T(H)1 and T(H)2). It is currently approved for the treatment of moderate to severe atopic dermatitis, a Th2-mediated disease, in children and adults.

Objective: We sought to evaluate the safety and efficacy of tacrolimus ointment 0.