Skin and subcutaneous (L00-L99).
- Folliculitis (hair follicle inflammation).
- Pyoderma (pustular rash)
Infectious and parasitic diseases (A00-B99).
- Gonorrhea (gonorrhea)
- Granuloma inguinale (GI; synonyms: granuloma venereum, donovanosis) – tropical sexually transmitted infection (“STI”) caused by the bacterium Calmmatobacterium granulomatis, primarily associated with ulcers (genital ulcer disease, GUD) [to be excluded in later stages].
- Herpes simplex genitalis – disease transmitted by the herpes simplex virus [to be excluded at all stages].
- Lymphogranuloma venereum (LGV) – sexually transmitted disease caused by chlamydia, primarily associated with ulcers (genital ulcer disease, GUD) [to be excluded in later stages]
- Syphilis – sexually transmitted disease [to be excluded in the early stages].
Musculoskeletal system and connective tissue (M00-M99).
- Behçet’s disease (synonym: Adamantiades-Behçet’s disease; Behçet’s disease; Behçet’s aphthae) – multisystem disease of the rheumatic type associated with recurrent, chronic vasculitis (vascular inflammation) of the small and large arteries and mucosal inflammation; The triad (the occurrence of three symptoms) of aphthae (painful, erosive mucosal lesions) in the mouth and aphthous genital ulcers (ulcers in the genital region), as well as uveitis (inflammation of the middle eye skin, which consists of the choroid (choroid), the corpus ciliary (corpus ciliare) and the iris) is stated as typical for the disease; a defect in cellular immunity is suspected
Genitourinary system (kidneys, urinary tract – sex organs) (N00-N99).
- Balanitis erosiva – ulcerative acorn inflammation.
