title: Difficulties of an elementary diagnosis.
mesh_terms: D000152:Acne Vulgaris / Q000175:diagnosis*; D003933:Diagnosis; D006801:Humans; D013591:Syphilis, Cutaneous / Q000175:diagnosis*
keywords: ACNE/diagnosis; DIAGNOSIS/mistaken; SYPHILIDS/diagnosis
vernacular_title: Difficultés d'un diagnostic élémentaire.