Intense pain, hemorrhagic periods, chronic fatigue... We often put all these ailments under the label "Endometriosis". However, there is a little-known and equally common "cousin": Adenomyosis.
Often called "false twins", these two pathologies affect the endometrium, but not in the same place. Here is how to tell them apart to better discuss them with your doctor.
Article Summary
1- Endometriosis: The "Traveling" disease (Outside)
The endometrium is the tissue that lines the inside of the uterus and is shed during your period.
In the case of Endometriosis, cells similar to this endometrium migrate and grow outside the uterus.
- Where do they go? They colonize other organs: the ovaries (cysts), fallopian tubes, bladder, rectum, or peritoneum.
- The problem: With each cycle, these lesions bleed (like mini-periods) but the blood cannot escape. This creates chronic inflammation, adhesions, and intense pain.
2- Adenomyosis: The "Internal" disease (Inside)
It is often called "internal endometriosis", but it is a distinct pathology.
In the case of Adenomyosis, the endometrial cells do not leave the uterus. They infiltrate the uterine muscle (the myometrium).
Imagine the "lining" of your uterus growing through the wall, instead of staying on the surface.
- The mechanical consequence: The uterus becomes larger, "softer", and fibrous.
- The key symptom: Because the muscle is infiltrated, it contracts poorly. Result: extremely heavy (menorrhagic) and painful periods.
3- Comparison Table: Symptoms and Differences
It is often difficult to tell things apart, but certain signs are unmistakable.
| Criterion | Endometriosis | Adenomyosis |
|---|---|---|
| Location | OUTSIDE the uterus (Ovaries, digestive...). | INSIDE the uterine muscle. |
| Main pain | Pain during periods, ovulation, intercourse, or digestion. | Very intense uterine cramps (the uterus is trying to expel). |
| The Flow (Blood) | Can be normal (pain is the primary symptom). | Often hemorrhagic and long (the #1 symptom). |
| Belly | "Endo Belly" (digestive bloating). | Heavy and weighty lower abdomen (enlarged uterus). |
| Common age | From adolescence. | Often diagnosed after 35-40 years old (or after pregnancies). |
4- Can you have both? (Yes)
It's a double whammy, and it is very common. It is estimated that a large proportion of menstruating people with severe endometriosis also suffer from associated adenomyosis.
Why is it important to know?
Because managing your period will be different. If you have adenomyosis, your flow will probably be very heavy. You will need very high-capacity period products (like a Size L Cup or a Menstrual Disc) to manage the "floods".
In summary: Endometriosis hurts everywhere (outside), adenomyosis makes you bleed a lot (inside). In both cases, it is not "all in your head", and it warrants a medical diagnosis.
