Ulcer Anal fissure Aphthous ulcer Callous ulcer Corneal ulcer Diabetic foot ulcer Genital ulcer Mouth ulcer Organ (biology) Peptic ulcer Pressure ulcer Stress ulcer Ulcer (dermatology) Ulcerative colitis Ulcerative dermatitis Ulcerative lichen planus Ulcerative sarcoidosis Venous ulcer