IUD for Adenomyosis Pain and Bleeding

A hormonal IUD can ease adenomyosis pain and bleeding

A hormonal IUD for adenomyosis can substantially reduce pain and heavy bleeding for many people without daily medication. The levonorgestrel intrauterine system (LNG-IUS) offers long-acting, nonsurgical symptom relief, although response varies and it is not a cure.

If pain, heavy periods, or fatigue interfere with daily activities or intimacy, this device may be worth considering. It can provide lasting relief while avoiding daily pills or major surgery.

How the hormonal IUD works

The LNG-IUS is a small, T-shaped device placed inside your uterus during an office procedure. It steadily releases levonorgestrel, a hormone that acts locally to thin the uterine lining and reduce inflammation. These effects can significantly dampen pain signals and bleeding.

Mirena is a familiar brand name for this hormonal IUD, sometimes called a Mirena coil. The benefits described here apply to the levonorgestrel-releasing system, not to every type of IUD.

Although often used for contraception, the LNG-IUS also treats gynecologic symptoms, including those caused by adenomyosis. Unlike pills or injections, it delivers hormone directly inside the uterus. Many people experience stronger symptom relief and fewer whole-body side effects than with oral medications, though those side effects can still occur.

How much pain and bleeding may improve

In a 2025 prospective observational study of 110 women ages 35–45 with adenomyosis, pain and menstrual blood loss improved substantially six months after LNG-IUS insertion. The figures below describe group averages, not a guarantee of an individual result.

Menstrual pain and other pelvic pain

Average menstrual pain scores fell from about 5.5 to 1.4 on a 0–10 scale after six months. That is a substantial reduction, potentially making the difference between missing daily activities and being able to manage them.

Chronic pelvic pain and pain during sex also improved. Average scores fell from about 1.6 to 0.8 for chronic pelvic pain and from about 1.8 to 0.5 for pain during sex, reductions of more than half before rounding.

Heavy bleeding and changes to periods

Heavy bleeding is an area where the LNG-IUS can be particularly helpful. In the 2025 study, estimated average menstrual blood loss fell from about 67 mL to less than 5 mL after six months.

For many users, this can mean moving from soaking through pads every hour to normal or light periods. Some eventually have no periods at all, called amenorrhea.

Satisfaction and day-to-day benefits

About 87% of women in the 2025 study reported being satisfied. Satisfaction is a separate measure from symptom relief: it reflects how someone feels about treatment overall, rather than how much a particular symptom improved.

Many women appreciate freedom from daily pills and, once bleeding settles, fewer unpredictable cycles and worries about leaks. Individual experiences still vary.

Side effects and reasons to seek a review

The LNG-IUS is generally well tolerated, but early symptoms and device problems need different responses. If pain or bleeding worsens, you suspect the device has moved, or symptoms concern you, contact your own clinician rather than assuming the IUD is making adenomyosis worse.

Spotting and hormonal effects

Spotting or light, irregular bleeding often occurs during the first few months and usually improves with time. Some women eventually stop having periods.

Because most of the hormone stays local, mood changes, acne, and breast tenderness are much less common than with the pill. They can still happen and are worth discussing if they are troublesome.

Placement discomfort

Insertion can be uncomfortable, but the procedure is quick, and pain usually subsides afterward. Ask your clinician beforehand what to expect during placement and how discomfort will be managed.

Pain that worsens rather than settles should be reviewed by your own care team.

Displacement or expulsion

An IUD can move out of place or fall out. In the 2025 study, this happened in about 4.5% of users, roughly one in twenty.

The risk is greater when adenomyosis has enlarged the uterus, which may be identified during an examination or on imaging. If displacement or expulsion occurs, replacement or an additional procedure may be needed. In some circumstances, securing the device with sutures is an option to discuss with a specialist.

Who may be a good candidate

Reasons to consider it

The LNG-IUS may be a good fit if you want relief from pelvic pain or heavy periods without daily pills or injections. It can provide treatment for up to five years.

It is also a nonsurgical option for someone who wants to preserve future fertility. It acts as contraception while in place, so future pregnancy plans should be part of the discussion with your doctor.

Reasons it may be a poor fit

A uterus that is not extremely enlarged is more likely to retain the device. Significant enlargement or distortion of the uterus, repeated expulsions, or medical reasons to avoid hormonal treatment call for an individualized discussion about suitability and alternatives.

Although rare, pregnancy can occur if the device is displaced. Suspected movement therefore needs review both for symptom control and for contraceptive protection.

When to expect improvement

Many women notice improvement in pain and bleeding within the first few cycles after insertion. For most, maximum benefit appears by about six months.

Early spotting or irregular bleeding does not necessarily mean treatment has failed. Give it time if symptoms are settling, but discuss worsening symptoms or inadequate improvement by around six months with your own clinician.

When the IUD is not enough

Limits of symptom relief

About one in ten women find that the LNG-IUS does not provide enough benefit or causes complications that lead them to stop using it. The 2025 study reported an unsuccessful outcome rate of about 11%.

Relief may be less dramatic if your uterus is very large or other gynecologic conditions contribute to your symptoms. If you have both endometriosis and adenomyosis, an IUD should not be expected to treat every source of pelvic pain. The 2025 study excluded women with pelvic endometriosis, so its results do not directly describe people with both conditions.

The IUD manages symptoms rather than curing adenomyosis. Symptoms can return after removal, and long-term management may involve trying different treatments over time.

Other treatment options

If the LNG-IUS is not a good fit, alternatives include hormonal pills, GnRH agonists, non-hormonal treatments, and, in some cases, surgery. Your doctor can help tailor these options to your symptoms, uterine findings, response to previous treatment, and fertility plans.

Questions to take to your doctor

Before choosing an LNG-IUS, ask:

• What’s my uterine size, and will that affect how well the device stays in place?
• What can I expect with pain and bleeding after insertion, and what’s normal in the first months?
• How will I know if the device moves or gets expelled, and what should I do if that happens?
• What are the realistic chances I’ll need to try another treatment if this doesn’t work?
• How does the LNG-IUS fit with my plans for future fertility, if I have them?

Track your pain, bleeding, and side effects so you can discuss changes at follow-up. Keep asking questions, and revisit your options if the current approach is not enough. Your experience is valid, and your treatment plan should put your quality of life first.