Conditions

What Is Adenomyosis?

2026-06-26 · 2:07 · Menstrual Cycle

The short answer

What is adenomyosis? It's a common but under-discussed condition behind a lot of heavy, painful periods, and many people have never heard of it. If your periods are intense and you've felt dismissed, this one's for you. Let me explain.

In this video

A common but under-talked-about cause of heavy, painful periods

It's when uterine-lining tissue grows INTO the muscle wall

In adenomyosis, tissue like your uterine lining grows into the muscular wall of the uterus itself. Each cycle, that tissue still tries to bleed, but it's trapped inside the muscle. That causes the uterus to become enlarged, tender, and to cramp hard, which drives the heavy, painful periods.

Adenomyosis vs endometriosis: inside the wall vs outside the uterus

How is it different from endometriosis? Same idea, different location. In endometriosis, the tissue grows outside the uterus, on other organs. In adenomyosis, it grows inside the uterine muscle wall. Some people have both, which is part of why they get confused.

Signs: very heavy bleeding, severe cramps, a heavy 'full' feeling

The signs to know are very heavy or prolonged periods, severe cramping that can get worse over the years, and a feeling of heaviness, fullness, or pressure low in your belly. Some describe their uterus feeling bulky or tender. It's often more common after having children and in the forties.

It's real, diagnosable, and treatable — so speak up

The most important message: this is real, it can be diagnosed with imaging like ultrasound or MRI, and it's treatable, with options ranging from hormonal management to other procedures. So if your periods are heavy and painful enough to disrupt your life, don't tough it out, tell your doctor and ask about adenomyosis.

PinkyBloom, link in description. Educational only, not medical advice.

So, to recap: adenomyosis is when uterine-lining tissue grows into the muscle wall of the uterus, causing heavy, painful periods and a bulky, tender uterus. It's like endometriosis but inside the wall instead of outside the uterus. It's real, diagnosable with imaging, and treatable, so speak up if your periods are disrupting your life. Tracking your symptoms in PinkyBloom helps your doctor, link's in the description. This video is for general education and isn't a substitute for professional medical advice. Take care, and I'll see you in the next one.

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