Which of the following sexually transmitted diseases is known to be incurable?

The correct answer is herpes, which is caused by the herpes simplex virus (HSV). Once a person is infected with this virus, it remains in their body for life. While antiviral medications can help manage symptoms, reduce outbreaks, and lower the risk of transmission, there is currently no cure that can completely eliminate the virus from the body.

Chlamydia, syphilis, and gonorrhea are bacterial sexually transmitted infections that are treatable with antibiotics. Each of these infections can be cured if diagnosed early and treated appropriately. This contrast highlights the difference between viral infections, like herpes, which can remain dormant and reactive, and bacterial infections, which can often be cleared from the body with medication. Understanding this distinction is important for awareness, prevention, and treatment of sexually transmitted infections.