Adenomyosis is common, often missed, and treatable. Here are the signs to know, how it’s diagnosed, and the options that help.
Adenomyosis happens when the tissue that lines the uterus grows into its muscular wall. The most common adenomyosis symptoms are heavy or long periods, cramps that get worse over the years, pelvic pain or pressure, and pain during sex. About one in three women with adenomyosis has no symptoms at all. It’s most often found in women aged 35 to 50 who have had at least one pregnancy. An ultrasound can usually show it, and treatments range from pain relievers and hormonal options to procedures. Symptoms usually ease after menopause.
Common symptoms
- Heavy periods, sometimes with clots, or periods that last longer than before
- Cramps that worsen over time, often more severe than in your 20s
- Pelvic pain or pressure, sometimes between periods
- Pain during sex
- A swollen or tender lower belly, as the uterus can become enlarged
- Tiredness or breathlessness from low iron, if bleeding is heavy
Many women assume that worsening periods are just part of getting older. If your periods have become noticeably heavier or more painful, that change is worth mentioning to your doctor.
Adenomyosis, endometriosis or fibroids?
All three can cause heavy, painful periods, and they often occur together.
| Where the tissue is | Typical signs | |
|---|---|---|
| Adenomyosis | Inside the muscle wall of the uterus | Heavy, painful periods; an enlarged, tender uterus |
| Endometriosis | Outside the uterus, such as on the ovaries or pelvic lining | Pelvic pain, often outside periods; pain during sex |
| Fibroids | Non-cancerous growths of uterine muscle | Heavy periods, pressure, frequent urination |
How it’s diagnosed
Your doctor will ask about your periods and examine you. A transvaginal ultrasound is usually the first test and can often show adenomyosis. If the picture isn’t clear, an MRI gives more detail. Your doctor may also check your iron levels if your periods are heavy.
Treatment options
Treatment depends on how much the symptoms affect you, your age, and whether you want a future pregnancy.
- Pain relievers such as ibuprofen, started early in your period. See are you taking ibuprofen too late?
- Hormonal options, such as a hormonal IUD, birth control pills or progestin, which can lighten bleeding and ease pain
- Medicine to reduce heavy bleeding, taken during your period
- Procedures, such as blocking the blood supply to the affected area, for women who want to keep their uterus
- Hysterectomy, the only permanent cure, for severe symptoms when future pregnancy isn’t wanted
If you’re trying to conceive, see a fertility specialist to discuss your options.
Living with adenomyosis
- Track your periods: start date, how heavy, and pain levels
- Ask for an iron check if your periods are heavy
- Use heat on your lower belly or back for cramps. See our heating pad guide.
- Remember that symptoms usually ease after menopause
When to see a doctor
See a doctor if your periods have become heavier or more painful, if cramps keep you from your usual activities, or if you have pain during sex. Get urgent care for very heavy bleeding with dizziness or fainting.
The Chinese medicine view
In Traditional Chinese Medicine, heavy, painful periods with dark clots and a fixed, stabbing pain are traditionally linked to blood stagnation, often alongside cold. These are traditional descriptions, not a diagnosis. Adenomyosis needs medical evaluation and care.
A comfort routine alongside your care
For women whose monthly cramps and lower-back discomfort keep returning, CycleCalm is a sealed herbal pouch worn over the navel as a 30-day course, guided by the traditional cold-in-the-uterus approach. It is not a treatment for adenomyosis and doesn’t replace the care above. Discuss it with your doctor if you’ve been diagnosed.
Reviewed October 2026. Author: Qingcai Wang, MD, PhD, developer of the Five Essences external herbal-pouch formulations, with a commercial interest in their sale. General education only; continue your medical care.
Sources: Cleveland Clinic: adenomyosis; MedlinePlus: adenomyosis; StatPearls: adenomyosis.