Most people who have a sexually transmitted disease (STD) have no symptoms. To diagnose an infection, you have to get tested by a doctor or at a clinic.
STDs caused by bacteria, fungi or parasites can be treated with antibiotics. These antibiotics are usually administered orally (mouth). However, sometimes they are also injected or applied directly to the affected area. Whatever the infection, and regardless of how quickly the symptoms disappear after the start of treatment, the infected person should take all the medications indicated by the health professional to make sure that the STD is treated completely. Laboratory tests can identify the cause and detect infections, that you may have contracted, if your sexual history, current signs and symptoms suggest that you have a sexually transmitted infection.