Dear Thanvi, there are quite a few Sexually Transmitted Diseases. Starting from Gonorrhea ,Herpes, HPV, HIV, Syphilis etc. Every medical condition has different treatment.  But depending upon the severity of the medical condition, the treatment and prognosis differ. Few treatments include oral medication, injections, etc. For conditions like HPV, it can be prevented through vaccination. If the condition has been diagnosed little late, longer treatment of antibiotics might be required.