A genital ulcer is an open sore that appears on the genital area, which includes the external reproductive organs. These ulcers can be caused by various factors, including infections, sexually transmitted diseases (STDs) like herpes or syphilis, and non-infectious conditions such as Behçet's disease. Symptoms may include pain, itching, and discomfort in the affected area. Diagnosis typically involves a physical examination and may require laboratory tests to identify the underlying cause. Treatment depends on the cause of the ulcer and may include antiviral medications for viral infections or antibiotics for bacterial infections. Proper hygiene and safe sexual practices can help prevent genital ulcers.