Pelvic Inflammatory Disease (PID) is an infection of the female reproductive organs, including the uterus, fallopian tubes, and ovaries. It often occurs when bacteria from the vagina or cervix spread to these areas, usually due to sexually transmitted infections like chlamydia or gonorrhea. Symptoms can include pelvic pain, fever, and unusual discharge, but some women may not experience any noticeable signs. If left untreated, PID can lead to serious complications, such as infertility or chronic pelvic pain. Early diagnosis and treatment with antibiotics are crucial to prevent long-term health issues. Regular check-ups and safe sex practices can help reduce the risk of PID.