
Can Hormone Treatment Calm Adenomyosis Symptoms Over Time? What an 18 Month Follow Up Study Found
An evidence-based look at 18‑month outcomes of hormone therapy for adenomyosis—symptom relief, ultrasound changes, side effects, and what it means for you.

Living with adenomyosis can mean planning your life around pain and bleeding—painful periods (dysmenorrhea), heavy menstrual bleeding, and sometimes other ongoing pelvic pain symptoms that don’t neatly follow a calendar. If you also have endometriosis, the picture can feel even more complicated, because symptoms may overlap and imaging findings can change over time.
A 2025 study in the Journal of Personalized Medicine followed premenopausal people with ultrasound evidence of adenomyosis (with and without endometriosis) for 18 months to see what happened to symptoms and ultrasound findings in those who used continuous hormonal treatment compared with those who did not. This kind of real‑world, longer follow‑up matters because many patients are trying to decide whether staying on medication is “worth it” over time—especially when side effects are part of the trade‑off.
This article walks through what the study observed, what it might mean for day‑to‑day decision-making, and what the study cannot prove.
Key Findings
Why this study was done
The researchers aimed “to evaluate the impact of hormonal therapy” on painful symptoms over “an 18‑month follow‑up,” and they also wanted to “explore sonographic changes” (changes seen on ultrasound) alongside symptoms. In other words, they weren’t only asking, “Do people feel better?”—they also asked, “Does the uterus (and any coexisting endometriosis) look different on imaging over time?”
Importantly, this was described as a pilot retrospective observational study. That means the researchers looked back at what happened in a group of patients rather than randomly assigning treatment.
Who was included (and how adenomyosis/endometriosis were assessed)
The study included “40 women with ultrasound evidence of adenomyosis with and without endometriosis.” Symptoms were tracked using a VAS (Visual Analog Scale), described as a “10 cm Visual Analog Scale,” where 0 means no pain and 10 means the maximum pain.
Adenomyosis and endometriosis were assessed by ultrasound during follow‑up. The paper also notes that there is “no consensus currently exists within the MUSA group” for grading severity in a standardized way, which matters when interpreting how “mild” vs “severe” disease is classified across studies.
What treatment was studied
Twenty patients initiated treatment: “Twenty patients initiated continuous progestin therapy with Dienogest 2 mg per day.” The comparison group was not a placebo group; it consisted of people who chose not to use hormonal treatment: “twenty declined hormonal treatment.” That choice is important, because people who accept or decline treatment can differ in ways that affect outcomes (for example, symptom severity, side-effect concerns, or other health factors), even if those differences aren’t fully captured in the data.
Symptom changes over time
One of the most striking reported findings was for dysmenorrhea and heavy menstrual bleeding in the treated group. The authors report that these symptoms “completely disappear in patients on continuous hormone therapy,” with dysmenorrhea changing from “VAS 7 ± 1.8 SD T0 vs. VAS 0 after 6 months,” and this improvement was sustained through 18 months per the study’s summary claim.
In contrast, among people who did not receive hormonal therapy, the paper reports that “symptoms either remain unchanged or may worsen over time.” Because this was not a randomized trial, the study cannot prove treatment caused the differences—but it does describe two clearly different symptom trajectories in the groups they followed.
The paper also notes that not every symptom improved to zero for everyone. It reports that other pain symptoms improved more slowly and did not always fully resolve, with “VAS scores decreasing to 4 after 18 months” for those symptoms (the study does not provide further detail in the extracted summary about which specific symptoms were included in this “other pain” category).
Ultrasound changes: what happened to adenomyosis and endometriosis findings?
The study also tracked what the disease looked like on ultrasound over time.
In the treated group, the authors describe a “progressive reduction in focal adenomyosis among treated patients,” with focal adenomyosis reported as “25%… 15%… 10% at 18 months.” In the untreated group, ultrasound suggested “worsening in disease extent,” including a shift toward more diffuse or mixed patterns.
For participants with endometriosis, there was a specific finding about endometriomas (ovarian cysts related to endometriosis). In treated patients with endometriomas, the maximum diameter decreased significantly by 18 months, from “T0: 38.4 ± 11.1 mm vs. T3: 18.5 ± 8.1 mm.” The study summary also states that “other endometriosis sites were stable in size.” The extracted analysis notes that the number of treated patients with concomitant endometriosis was not fully detailed in the Results and appears to rely on a table reference.
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Schedule Your VisitSide effects reported with treatment
Symptom relief is only one side of the equation. This study reported a notable rate of side effects in the hormone-treated group: by 18 months, “nearly half of the patients undergoing hormone therapy experienced hypoestrogenism-related side effects.” The examples listed include “vaginal dryness, decreased libido, and mood disturbances.” The study reports that none of these symptoms were reported in the untreated group (“no patients in the non-treatment group”).
Hypoestrogenism-related side effects are symptoms that can happen when estrogen effects in the body are reduced. The study does not report strategies for preventing or treating these side effects, and it does not report whether side effects led anyone to stop treatment.
What This Means For You
If you are deciding whether to try (or stay on) continuous dienogest for adenomyosis symptoms, this study offers a real-world picture of what may happen over a longer stretch of time—while also showing the trade‑offs.
Here are the most practical takeaways that come directly from what the researchers reported:
- In this study, people who took continuous dienogest (2 mg/day) had dysmenorrhea and heavy menstrual bleeding drop to zero by 6 months and stay improved through 18 months (“VAS 0 after 6 months”).
- If you choose not to use hormonal treatment, this study observed that symptoms “either remain unchanged or may worsen over time” during 18 months of follow‑up.
- Imaging did not stay static: ultrasound findings appeared more stable or improving with treatment and more worsening without treatment, including “worsening in disease extent” in untreated patients. If you’re already getting ultrasounds, you may want to ask your clinician whether regular follow‑up imaging could help track changes over time in your specific case.
- Side effects are not rare. By 18 months, “nearly half” of treated patients reported hypoestrogenism-related issues such as “vaginal dryness, decreased libido, and mood disturbances.” If you start treatment, consider planning ahead with your clinician for side‑effect monitoring and what you’ll do if they become disruptive.
This study does not report fertility outcomes, pregnancy outcomes, or whether treatment changed the need for surgery—so if those are your main concerns, you’ll need other evidence and individualized counseling.
Important Limitations
This study provides useful clues, but there are several reasons to treat the findings as suggestive rather than definitive:
- It cannot prove cause and effect. This was a “pilot retrospective observational study,” meaning people were not randomized to treatment. Improvements could be associated with treatment without being solely caused by it.
- The sample was small. Only “40 patients” were included, which limits how confidently these results apply to the broader adenomyosis/endometriosis community.
- Ultrasound grading is not fully standardized. The authors state “no consensus currently exists within the MUSA group” for severity grading, so “improvement” or “worsening” on ultrasound may not translate perfectly across different clinics or studies.
- Some outcomes are suggested, not demonstrated. The paper discusses future possibilities (including fertility-related questions), but this study itself does not demonstrate fertility preservation or improved reproductive outcomes; the abstract notes “Further larger-scale... studies are needed.”
References
Martire Francesco Giuseppe; d’Abate Claudia; Costantini Eugenia; De Bonis Maria; Sorrenti Giuseppe; Centini Gabriele; Zupi Errico; Lazzeri Lucia. “Sonographic and Clinical Progression of Adenomyosis and Coexisting Endometriosis: Long-Term Insights and Management Perspectives …” Journal of Personalized Medicine. 2025. DOI: not reported in this study. DOI: 10.3390/jpm15110538
Quick Answers
What is endo belly?
“Endo belly” is the common term patients use for the severe bloating and abdominal swelling that can happen with endometriosis. It’s often described as a belly that looks or feels suddenly distended—sometimes within hours—and may come and go in waves, frequently worsening around a period but not always. Importantly, this can mimic weight gain even when the underlying issue is swelling, fluid shifts, or gastrointestinal distension rather than true fat gain.
Endometriosis can irritate tissues in the pelvis and abdomen and can also affect (or “talk to”) the bowel, which helps explain why many people notice constipation, diarrhea, cramping, or a tight, pressured abdomen alongside pelvic pain. You can have significant digestive symptoms even when routine GI testing looks normal, because endometriosis often involves the outer surface or deeper layers around the bowel rather than the inner lining.
If endo belly is a major part of your symptom pattern—especially when it comes with painful bowel movements, cyclical flares, or persistent pelvic pain—our team can help you sort out what’s driving it and what treatment options are most likely to bring relief. Explore our educational resources, and if you’re ready, reach out to schedule a consultation so we can review your history and build a plan around your goals.
Why do endometriosis patients try alternative medicine?
Many people with endometriosis try “alternative” medicine because they’ve spent years in pain without clear answers or durable relief. When hormones cause side effects, symptoms persist after prior treatments, or surgery feels out of reach, it’s completely understandable to look for something—anything—that offers a sense of control and day-to-day functioning. Social media and anecdotal stories can also make certain approaches sound like hidden “cures,” especially when the medical system has been dismissive or slow to diagnose.
We also see another, more practical reason: endometriosis pain is multifaceted—driven by inflammation, pelvic floor and musculoskeletal factors, nerve irritation, and sometimes central sensitization—so patients often need more than one tool. The key distinction is that integrative care is meant to work alongside mainstream medical and surgical treatment, not replace it. Our approach is to help you separate what’s promising and measurable from what’s expensive, vague, or marketed as a miracle, and build a coordinated plan that targets both the disease and the pain mechanisms that keep symptoms going. If you’re feeling pulled toward alternative options, we invite you to reach out—so we can help you make a plan that protects your time, your body, and your long-term goals.
How do I make the most of a short endometriosis appointment?
Go in with a one-page snapshot of your story so the limited time is spent on decision-making, not backtracking. The most helpful snapshot includes: your top 2–3 symptoms, the pattern (cyclical vs daily, triggers, where pain starts and spreads), what you’ve already tried and what happened, and what your symptoms keep you from doing (work, school, intimacy, exercise). If you have a history of “normal” scans, bring that too—because imaging can miss endometriosis, and the pattern of symptoms and prior response to treatment still matters.
Bring the right records if you have them—especially operative reports, pathology, and imaging reports (and ideally the actual images). Then decide your goal for the visit: diagnostic clarity, a plan to evaluate look-alike or coexisting conditions, or a clear surgical discussion (whether surgery is likely to help, anticipated scope, and what recovery may involve). If you want to make the appointment count even more, reach out to our team ahead of time so we can review what you’ve already done and tell you exactly what information would be most useful for a focused, productive conversation.
Can I keep working with endometriosis?
Yes—many people with endometriosis keep working, but it often requires a realistic plan around symptoms like pain, fatigue, brain fog, heavy bleeding, and unpredictable flares. Work becomes harder when endometriosis pain isn’t just “period pain,” but a complex, whole‑nervous‑system experience that can persist throughout the month and sometimes continues even after partial treatments. If your job performance is being affected, that’s not a personal failure—it’s a sign your symptoms need more targeted evaluation and a clearer strategy.
In our practice, we think about work in two parallel tracks: managing symptoms so you can function day to day, and treating the underlying disease when it’s driving ongoing inflammation, adhesions, or organ involvement. Depending on your situation, this may include a structured pain management approach (often multimodal) and, when appropriate, excision surgery planning based on a careful review of your history, imaging, and prior operative/pathology reports. If you’re wondering what’s realistic for you—whether that’s staying at work with accommodations, reducing hours temporarily, or planning time off for treatment—reach out to schedule a consultation so our team can review your records and help you map out next steps.
How do I document endometriosis for work accommodations?
Documenting endometriosis for work accommodations starts with creating a clear paper trail that connects your diagnosis (or suspected diagnosis) to specific functional limits at work. Keep a simple symptom log for at least 4–8 weeks: date, symptom (pelvic pain, fatigue, bowel/bladder pain, heavy bleeding), severity, duration, triggers, and exactly what work tasks were affected (missed shifts, reduced standing tolerance, inability to sit, concentration issues, frequent bathroom breaks). Save objective documentation too—operative and pathology reports if you’ve had surgery, imaging reports when available, ER/urgent care notes, medication or treatment history, and any workplace attendance or performance impacts that occurred during flares.
For an accommodation request, what usually helps most is a concise clinician letter that focuses on work restrictions rather than extensive medical detail—e.g., need for flexible scheduling during flares, ability to work from home at times, breaks for pain management/restroom access, limits on prolonged standing/sitting, or intermittent leave when symptoms are unpredictable. If you’re pursuing disability benefits, the same principle applies: decision-makers look for consistent records over time showing that symptoms significantly interfere with your ability to perform job duties, since endometriosis isn’t automatically classified as a disability.
Our team can help you organize the records that best support your case and, when appropriate, provide medical documentation that reflects the reality of your symptoms and functional limitations. If you’d like, reach out to schedule a consultation so we can review what you already have and identify what additional documentation would be most useful for workplace accommodations.

