Pelvic inflammatory disease

Pelvic inflammatory disease, or PID, is an infection of the upper female reproductive system, including the uterus, fallopian tubes, and ovaries.

It can cause a number of serious complications, including infertility.

The female reproductive system includes all of internal and external organs that help with reproduction.

The internal sex organs are the ovaries, which are the female gonads, the fallopian tubes, two muscular tubes that connect the ovaries to the uterus, and the uterus, which is the strong muscular sack that a fetus can develop in.

The neck of the uterus is called the cervix, and it protrudes into the vagina.

At the opening of the vagina are the external sex organs, and these are usually just called the genitals and they’re in the vulva region.

They include the labia, the clitoris, and the mons pubis.

The vagina, uterus, and fallopian tubes all have a mucosa, which is a layer of epithelial cells that lines the inside of these organs.

PID usually develops from a bacterial infection in the vagina or cervix which causes inflammation of this mucosal layer.

About 60 percent of the time, this changes the composition of the bacterial flora in the vagina, also called bacterial vaginosis.

Because the reproductive tract is essentially one long tunnel that starts at the ovaries and ends at the external sex organs, the infection can travel up the tract pretty easily.

Some mechanisms can make it even easier! For example, the cervical mucus, which normally acts as a barrier preventing bacteria from entering the uterus, may become less effective.

The mucus can become thinner as a result of normal variations throughout the menstrual cycle, or alternatively, it can become less effective in the context of bacterial vaginosis, which is when the normal balance of the vaginal flora is altered, and anaerobic bacteria proliferate and degrade the cervical mucus.