Two women with underlying distortion of their lower-body lymphatic systems from neoplasia and surgery or radiation therapy had recurrent episodes of lower-extremity erythroderma temporally associated with sexual intercourse. Both women had vaginal colonization with Streptococcus agalactiae (group B); one was shown to have recurrent bacteremia with this organism at the time of the episodes. Erythroderma developed in these women possibly because of seeding of S agalactiae in the vaginal soft tissues during coitus.
Richard T. Ellison, James A. McGregor. Recurrent Postcoital Lower-Extremity Streptococcal Erythroderma in WomenStreptococcal-Sex Syndrome. JAMA. 1987;257(23):3260–3262. doi:10.1001/jama.1987.03390230096032