Endometriosis is a fairly common condition among women of reproductive age. So if you're dealing with it, know that you're not alone. In simple terms, endometriosis happens when the tissue that usually lines your uterus starts growing in places it shouldn’t, like your ovaries, fallopian tubes, or even outside your pelvis.
Think of it as your body getting a little confused. The tissue that’s supposed to stay inside the uterus finds its way elsewhere, causing inflammation and sometimes scar tissue. This can lead to discomfort, but what’s more, it may affect your fertility.
This misplaced tissue doesn’t shed like your regular uterine lining during your period, which can lead to problems over time, like pain, inflammation, or lesions in the surrounding tissues.
There are four endometrial stages ranging from Stage I (minimal) to Stage IV (endometriosis).
In Stage I there are a few small implants of endometriosis, and no scar tissue is visible whereas in Stage IV numerous endometriotic implants and likely even large endometrial cysts within the ovaries are present.
Scar tissue can also be discovered in the uterus, rectum (the lower section of the intestines), and across the ovaries or fallopian tubes.
What Causes Endometriosis?
You might wonder, “Why is this happening to me?” Well, the exact cause of endometriosis isn’t fully understood, but there are some theories:
- Retrograde Menstruation: This is when some of your menstrual blood, carrying endometrial cells, flows backwards into your pelvis instead of leaving your body. It can then implant and grow in the wrong places.
- Cellular Metaplasia: Cellular metaplasia is when cells change from one form to another. Cells outside the uterus change into endometrial-like cells and start to grow.
- Stem Cells: Some experts believe that stem cells might play a role in spreading endometriosis throughout your body, through the bloodstream or lymphatic system.
No matter the cause, it’s important to know that endometriosis is not something you did or could have prevented—it’s simply how your body is reacting.