This document provides information about several sexually transmitted diseases (STDs) including pediculosis (crabs), herpes, HIV/AIDS, gonorrhea, and hepatitis. It describes the causes, symptoms, treatments, and methods of transmission for each disease. Key details include: pediculosis is caused by parasites that live in pubic hair; herpes is caused by viruses HSV-1 and HSV-2 and has no cure; HIV can be transmitted through sexual contact or blood and leads to AIDS if untreated; gonorrhea is a bacterial infection affecting warm moist areas that can lead to infertility if untreated; hepatitis has various causes and ranges in severity from self-limiting to potentially fatal liver damage.