Oral ulcerations in HIV infection.

Oral ulceration in HIV infection may be due to: (1) mycotic; (2) bacterial, protozoan; (3) and viral infections; (4) oral neoplasia; (5) aphthous ulceration/ulceration not otherwise specified (NOS); or (6) ulceration of iatrogenic origin. Of particular significance are oral ulcerations caused by viruses of the herpes virus group (HSV 1/2, CMV, VZV) and ulcerations of the aphthous type. It was shown recently that coinfection of viral ulcers occurs. The aetiopathogenesis of the aphthous type of ulcerations including the still debated ulceration NOS is not clear. Further basic and clinical research is necessary in order to better understand ulceration particularly in relation to immunoregulation, tissue breakdown and repair.