An uncommon cutaneous presentation of cat scratch disease

Herein we report a case of cat scratch disease on account of its atypical presentation. A 21-year-old woman presented erythema nodosum associated with painful bilateral inguinal adenopathy, odynophagia, joint pain and evening urticaria in a setting of impaired general condition. Initial serological testing for Bartonella henselae was negative. PCR for Bartonella henselae performed on an adenectomy fragment was positive. A favourable outcome was achieved with azithromycin. This case shows an atypical and severe presentation of cat scratch disease and raises the problem of sensitivity of serotyping.