Blisters on the genitalia is a symptom of which sexually transmitted disease?

Blisters on the genitalia are primarily associated with genital herpes, which is caused by the herpes simplex virus (HSV). This condition often presents as painful, fluid-filled blisters or sores in the genital area. These blisters can break open and form ulcers, leading to discomfort and potential complications if left untreated. Genital herpes is characterized by recurrent outbreaks, and the initial outbreak can be particularly severe, providing clear clinical signs.

Other options, while related to sexually transmitted infections, do not typically present with blisters. Syphilis can cause various symptoms such as sores (chancre) and rashes, but these are not blisters. Gonorrhea and chlamydia commonly manifest with symptoms like discharge and pain but do not lead to the formation of blisters. Thus, genital herpes is the correct condition to associate with blisters on the genitalia.