Genital lichen planus: update on diagnosis and treatment.

Lichen planus (LP) is an inflammatory autoimmune disease that affects both glabrous and mucosal skin. Although pathophysiology has not yet been fully defined, LP is a T-cell mediated disorder that demonstrates an increased Th1 cytokine expression as well as T-cell reactivity against basement membrane zone components. In males, genital LP often takes its more classic form as pink, shiny, flat-topped papules on the glans and coronal sulcus.

Guttate Psoriasis Following Streptococcal Vulvovaginitis in a Five-year-old Girl.

Background: Guttate psoriasis is frequently associated with a preceding pharyngeal or perianal streptococcal infection in children. Despite Group A beta-hemolytic streptococci (GABHS) being the most common cause of specific bacterial vulvovaginitis in prepubertal girls, there are no reports of streptococcal vulvovaginitis triggering guttate psoriasis.

Case: A five-year-old girl presented with guttate psoriasis following an episode of Streptococcal pyogenes vulvovaginitis.