Final answer:
PID complications notably include ectopic pregnancy and infertility due to scarring and blockage of the fallopian tubes which impedes the fertilization process or implantation of a fertilized egg in the uterus.
Step-by-step explanation:
Complications of Pelvic Inflammatory Disease (PID)
The complications of Pelvic Inflammatory Disease (PID) primarily include ectopic pregnancy and infertility. PID is an infection of the female reproductive organs that can lead to inflammation in the upper genital tract, including the fallopian tubes and ovaries. Inflammation can cause scarring, which may result in blockage of the fallopian tubes, preventing sperm from reaching an egg, or preventing a fertilized egg from reaching the uterus. This can significantly increase the risk of an ectopic pregnancy, where the fertilized egg implants outside of the uterus, often in a fallopian tube. Furthermore, due to the scar tissue formed as a result of the infection, infertility can occur as the normal functioning of the fallopian tubes is disrupted.