Venereology is a study of medicine which focuses on the treatment of sexually transmitted infections. In many regions of the world, venereology is treated as a branch of dermatology, because many of the conditions studied by venereologists result in skin eruptions and also other skin problems. The terms sexually transmitted infections and diseases are often used exchangeable, with both being used as a replacement for the now outdated term venereal disease. However, some people do distinguish between these diseases. If someone has an STI, it means that an infectious agent is present in the human body. Work in venereology can be complicated by few social issues and moral norms. Venereologists sometimes need to think not only about the mechanics of how infectious agents are passed, but the culture in the society where they are working, and the ways in which cultural values may contribute to the spread of infectious agents. Treatments: Antibiotics, skin surgeries.