Genital ulcers are a type of skin lesion that can appear on the genital area. They can cause discomfort and pain, and in some cases, may be a sign of an underlying medical condition. Genital ulcers are typically caused by a bacterial, viral, or fungal infection, though they can also occur due to skin trauma or inflammatory conditions. Bacterial infections are the most common cause of genital ulcers. The most common bacteria responsible are Haemophilus ducreyi, Treponema pallidum, and Neisseria gonorrhoeae. These bacteria typically enter the body through sexual contact and cause infection in the genital area. Viral infections, such as herpes simplex virus (HSV) or human papillomavirus (HPV), can also cause genital ulcers. These viruses are typically spread through sexual contact, though they can also be spread through skin-to-skin contact or contact with infected material. Fungal infections, such as candidiasis, can also cause genital ulcers. These infections are typically caused by an overgrowth of the yeast Candida, which is normally found in the vagina.