Skip to content
EvidenceHelixEvidenceLib · Scientific Encyclopedia
⌘ K

Scientific library

EvidenceLib encyclopediaAll articles A–Z2,835Open textbooks209Open-access articles1,406Cancer study catalog458How it is made

My workspace this browser

Saved pages0Notes & annotations0

Recently viewed

Explore by field

Cancer and Oncology182Genetics and Genomics170Neuroscience185Cardiovascular Medicine180Immunology142Pharmacology173Molecular Biology161Infectious Diseases150Rare and Inherited Diseases181Clinical Research173Anatomy and Physiology613Drugs and Chemicals621Psychiatry and Psychology185Public Health and Nutrition178Diagnostics and Medical Technology125Respiratory Medicine113Digestive System and Liver91Metabolism and Endocrine Disease177Bones, Joints, Muscles and Skin213Kidney, Urology and Women's Health173Eye, Ear, Nose and Throat55
Plans & pricingCompare EvidenceHelix workspace plans
Library›EvidenceLib›Kidney, Urology and Women's Health›Metrorrhagia

Continue where you left off ()

Explore more with EvidenceHelix Workspace

Compare studies, analyze evidence and create research reports with premium tools.

Explore Researcher plans

Research reading room

Metrorrhagia

Kidney, Urology and Women's Health · NLM MeSH · updated 2026-11-04 · version 1

Citations verified against PubMedNot yet clinician-reviewed10 referencesApproximately 5 min read

Abnormal uterine bleeding that is not related to menstruation, usually in females without regular menstrual cycle.

Table of Contents

1. Definition2. Research landscape3. Reading the evidence4. Open-access studies5. Key reviews6. References7. About this article

Definition and research guide

This page combines a MeSH definition, publication statistics and selected research abstracts. It is a starting point for reading the literature, not a medical textbook or a systematic evidence review.

Content available: 4 complete abstracts (909 words), 10 references. Full article text is not stored or reproduced here; follow the PMID, DOI or PMC links to read the original sources and their access terms.

Definition

Abnormal uterine bleeding that is not related to menstruation, usually in females without regular menstrual cycle. The irregular and unpredictable bleeding usually comes from a dysfunctional endometrium.

Definition: NLM Medical Subject Headings (MeSH) scope note (Public domain (U.S. National Library of Medicine); attribution requested). View the MeSH record.

Also known as: Breakthrough Bleeding; Bleeding, Breakthrough; Spotting; Dysfunctional Uterine Bleeding; Dysfunctional Uterine Bleedings; Uterine Bleeding, Dysfunctional; Bleeding Between Periods; Intermenstrual Bleeding.

Where it fits in the MeSH classification

Broader topics
Uterine Hemorrhage

Related concepts

  • Menstruation
  • Menstrual Cycle
  • Endometrium

Research landscape

PubMed indexes 2,563 records tagged with the MeSH heading “Metrorrhagia” (counts retrieved 2026-11-04). 103 of them (4.0%) were published from 2020 onward, and the busiest period so far is through 1999 with 1,805 records.

Reviews account for 144 records (5.6%) and meta-analyses for 3. Randomized controlled trials number 96 (3.7%) as a share of all records on the topic.

PubMed records by publication periodthrough 1999: 1,805 records; 2000-2009: 316 records; 2010-2019: 339 records; 2020 onward: 103 records1,805through 19993162000-20093392010-20191032020 onward
Records in PubMed indexed with this heading, by publication period. Real counts from NCBI E-utilities; the final period covers only part of the current year. Volume reflects how much has been published, not how strong the evidence is.
Show the data
PeriodRecords
through 19991,805
2000-2009316
2010-2019339
2020 onward103
Share of records by publication typeReviews: 5.6 percent; Meta-analyses: 0.1 percent; Randomized controlled trials: 3.7 percentReviews5.6% (144)Meta-analyses0.1% (3)Randomized controlled trials3.7% (96)
Share of all PubMed records on this heading that carry each publication type. Types overlap with other records, so the shares do not sum to 100%.
Publication-type chart data
Publication types among 2,563 PubMed records
TypeRecordsShare
Reviews1445.6%
Meta-analyses30.1%
Randomized controlled trials963.7%

Method: PubMed query "Metrorrhagia"[MeSH Terms] with publication-type and date filters, retrieved 2026-11-04.

Reading the evidence in kidney, urology and women's health

Kidney, urinary and reproductive health research uses lab markers (such as creatinine), imaging, symptom scores and registry data on pregnancy and birth. Findings about pregnancy are especially sensitive to who was studied and when in pregnancy exposure occurred. Nothing on this page is advice about treatment, fertility or pregnancy; speak to a qualified clinician. Check the population, the outcome measured and whether the study accounted for other health differences between groups.

Evidence from open-access studies

These open-access studies come from PubMed’s best-match results for this heading (papers whose main topic it is), ranked here by citation count, with one recent addition. Each abstract is reproduced in full under its recorded open licence so that you can read the authors’ own words. They illustrate the literature; they are not a systematic summary of it. Citation counts measure attention, not reliability or clinical benefit.

Study comparison — selected abstracts, not a systematic review
Study / authorsYearSource label / designEurope PMC citationsLicence / source
Abnormal uterine bleeding
Whitaker L, Critchley HO
2016Review article
Design not recorded in structured metadata
111cc by
PMID 26803558 · DOI · PMC4970656
Efficacy and tolerability of a monophasic combined oral contraceptive containing nomegestrol acetate and 17β-oestradiol in a 24/4 regimen, in comparison to an oral contraceptive containing ethinylestradiol and drospirenone in a 21/7 regimen
Mansour D, Verhoeven C, Sommer W, Weisberg E, Taneepanichskul S, Melis GB, et al.
2011Randomized controlled trial
Design not recorded in structured metadata
71cc by
PMID 21995590 · DOI · PMC3233274
Assessment of Prediagnostic Experiences of Black Women With Endometrial Cancer in the United States
Doll KM, Hempstead B, Alson J, Sage L, Lavallee D
2020Research article
Design not recorded in structured metadata
52cc by
PMID 32412636 · DOI · PMC7229523
The contradictive findings between ultrasound, hysteroscopy and cytokines in women with nonhormonal IUDs suffering from menorrhagia: a prospective study
Watad H, Ifrach U, Stockheim D, Yulzari V, Meron OC, Blank M, et al.
2024Research article
Design not recorded in structured metadata
2cc by
PMID 38492083 · DOI · PMC11018669

Abnormal uterine bleeding [1]

Review article Whitaker L, Critchley HO · · 2016 · cited 111 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
Abnormal uterine bleeding (AUB) is a common and debilitating condition with high direct and indirect costs.
Closing excerpt
Treatment must remain individualised and encompass the impact of pressure symptoms, desire for retention of fertility and contraceptive needs, as well as address the management of AUB in order to achieve improved quality of life.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (162 words)

Abnormal uterine bleeding (AUB) is a common and debilitating condition with high direct and indirect costs. AUB frequently co-exists with fibroids, but the relationship between the two remains incompletely understood and in many women the identification of fibroids may be incidental to a menstrual bleeding complaint. A structured approach for establishing the cause using the Fédération International de Gynécologie et d'Obstétrique (FIGO) PALM-COEIN (Polyp, Adenomyosis, Leiomyoma, Malignancy (and hyperplasia), Coagulopathy, Ovulatory disorders, Endometrial, Iatrogenic and Not otherwise classified) classification system will facilitate accurate diagnosis and inform treatment options. Office hysteroscopy and increasing sophisticated imaging will assist provision of robust evidence for the underlying cause. Increased availability of medical options has expanded the choice for women and many will no longer need to recourse to potentially complicated surgery. Treatment must remain individualised and encompass the impact of pressure symptoms, desire for retention of fertility and contraceptive needs, as well as address the management of AUB in order to achieve improved quality of life.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 26803558 · DOI · PMC4970656

Efficacy and tolerability of a monophasic combined oral contraceptive containing nomegestrol acetate and 17β-oestradiol in a 24/4 regimen, in comparison to an oral contraceptive containing ethinylestradiol and drospirenone in a 21/7 regimen [2]

Randomized controlled trial Mansour D, Verhoeven C, Sommer W, Weisberg E, Taneepanichskul S, Melis GB, et al. · · 2011 · cited 71 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
ObjectivesThe primary objective was to assess the efficacy, cycle control and tolerability of a monophasic combined oral contraceptive (COC) containing nomegestrol acetate (NOMAC) and 17β-oestradiol (E2).
Closing excerpt
ConclusionsThese data show that NOMAC/E2 provides high contraceptive efficacy with acceptable cycle control as well as an overall adverse event profile similar to that of DRSP/EE.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (168 words)

ObjectivesThe primary objective was to assess the efficacy, cycle control and tolerability of a monophasic combined oral contraceptive (COC) containing nomegestrol acetate (NOMAC) and 17β-oestradiol (E2). Effects on acne were evaluated as a secondary objective. Results were compared to those of a COC containing drospirenone (DRSP) and ethinylestradiol (EE).MethodsWomen (aged 18-50 years) were randomised to receive NOMAC/E2 (2.5 mg/1.5 mg) in a 24/4-day regimen (n=1591) or DRSP/EE (3 mg/30 μg) in a 21/7-day regimen (n=535) for 13 cycles.ResultsEstimated Pearl Indices for NOMAC/E2 and DRSP/EE were 0.38 and 0.81 in women aged≤35 years and 0.31 and 0.66 for all women (18-50 years), respectively. Scheduled withdrawal bleedings were shorter and lighter among users of NOMAC/E2 and were sometimes absent altogether. Intracyclic bleeding/spotting was infrequent in both groups, and decreased over time. Type and frequency of adverse events were similar to those typically reported for COCs.ConclusionsThese data show that NOMAC/E2 provides high contraceptive efficacy with acceptable cycle control as well as an overall adverse event profile similar to that of DRSP/EE.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 21995590 · DOI · PMC3233274

Assessment of Prediagnostic Experiences of Black Women With Endometrial Cancer in the United States [3]

Research article Doll KM, Hempstead B, Alson J, Sage L, Lavallee D · · 2020 · cited 52 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
ImportanceBlack women with endometrial cancer have a 90% higher mortality rate than white women with endometrial cancer.
Closing excerpt
Conclusions and relevanceThe responses of interviewed black women with endometrial cancer suggest that several mechanisms may be associated with a delay in care before diagnosis among this high-risk population and represent modifiable factors that may be useful in the development of targeted interventions to improve the rates of early diagnosis among black women with endometrial cancer.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (356 words)

ImportanceBlack women with endometrial cancer have a 90% higher mortality rate than white women with endometrial cancer. The advanced disease stage at which black women receive a diagnosis of endometrial cancer is a major factor in this disparity and is not explained by differences in health care access.ObjectiveTo describe the prediagnostic experiences of symptoms and symptom disclosure among black women with endometrial cancer.Design, setting, and participantsThis community-engaged qualitative study developed an interview guide to collect data during semistructured interviews among a sample of 15 black women with endometrial cancer in the United States. Interviews were conducted in person or via a secure conferencing platform. An exploratory and descriptive content analysis was performed using iterative rounds of inductive coding, case summaries, and coanalysis with community input to identify emergent themes. Data were collected from October 3, 2017, to April 15, 2019, and the descriptive content analysis was performed from October 11, 2017, to May 6, 2019.Main outcomes and measuresBeliefs, interpretations, and experiences of black women with endometrial cancer from symptom onset to diagnostic confirmation of cancer.ResultsParticipants included 15 women who self-identified as black or African American and ranged in age from 31 to 72 years. Eight participants lived in the Puget Sound region of Washington, 2 participants lived in California, and 1 participant each lived in Alabama, Michigan, Louisiana, Georgia, and New York. Twelve participants were receiving adjuvant therapy during the study, which indicated that they were either in a high-risk group and/or had advanced-stage disease. Thirteen participants had health insurance at the time of symptom onset, and all participants had elected to receive cancer treatment. Participants described knowledge gaps and silence about menopause, misinterpretation of vaginal bleeding, and responses by first-line health care practitioners that were not aligned with the risk of endometrial cancer among black women in the United States.Conclusions and relevanceThe responses of interviewed black women with endometrial cancer suggest that several mechanisms may be associated with a delay in care before diagnosis among this high-risk population and represent modifiable factors that may be useful in the development of targeted interventions to improve the rates of early diagnosis among black women with endometrial cancer.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 32412636 · DOI · PMC7229523

The contradictive findings between ultrasound, hysteroscopy and cytokines in women with nonhormonal IUDs suffering from menorrhagia: a prospective study [4]

Research article Watad H, Ifrach U, Stockheim D, Yulzari V, Meron OC, Blank M, et al. · · 2024 · cited 2 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
PurposeThe objective of this study is to assess the correlation between bleeding irregularities and the accurate placement of the intrauterine device (IUD) device in the uterine cavity, determined through transvaginal ultrasonography and hysteroscopy.
Closing excerpt
The role of local reactive inflammatory cytokines should be further studied.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (223 words)

PurposeThe objective of this study is to assess the correlation between bleeding irregularities and the accurate placement of the intrauterine device (IUD) device in the uterine cavity, determined through transvaginal ultrasonography and hysteroscopy. In addition, the study aims to examine the cytokine profile in the uterine cavity and serum of patients experiencing bleeding irregularities after the insertion of nonhormonal IUDs.MethodsA prospective cohort study was conducted at a single tertiary medical center, wherein patients experiencing intermenstrual bleeding and spotting after the insertion of nonhormonal IUDs were enrolled. The study involved hysteroscopic and sonographic assessments of the uterine cavity and IUD placement, along with the analysis of blood and uterine cavity cytokine profiles.ResultsDuring the period between July 2019 and February 2020, a total of eight patients who experienced intermenstrual bleeding and spotting after the insertion of nonhormonal IUDs were enrolled the study. One case was excluded since a progestative device was detected by ultrasound. Out of the five cases that underwent a thorough ultrasonographic assessment, three cases (60%) showed an embedded IUD. However, these findings were excluded by the hysteroscopic evaluation.ConclusionThe results suggest that ultrasonographic assessment may lead to an overdiagnosis of IUD mispositioning compared to hysteroscopy. In addition, both ultrasound and hysteroscopy have limitations in diagnosing the cause of bleeding in most cases. The role of local reactive inflammatory cytokines should be further studied.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 38492083 · DOI · PMC11018669

Key reviews and meta-analyses

The most cited review-type papers among PubMed’s best-match results for this heading, listed with bibliographic details only. Follow the links for the full text and access terms.

  • Research article A systematic review evaluating health-related quality of life, work impairment, and health-care costs and utilization in abnormal uterine bleeding [5]
    Liu Z, Doan QV, Blumenthal P, Dubois RW · Value Health · 2007 · cited 251 times (Europe PMC)
  • Research article Practice bulletin no. 128: diagnosis of abnormal uterine bleeding in reproductive-aged women [6]
    Committee on Practice Bulletins—Gynecology · Obstet Gynecol · 2012 · cited 236 times (Europe PMC)
  • Research article The medical management of abnormal uterine bleeding in reproductive-aged women [7]
    Bradley LD, Gueye NA · Am J Obstet Gynecol · 2016 · cited 98 times (Europe PMC)
  • Research article Minimally invasive therapy for gynaecological symptoms related to a niche in the caesarean scar: a systematic review [8]
    van der Voet LF, Vervoort AJ, Veersema S, BijdeVaate AJ, Brölmann HA, Huirne JA · BJOG · 2014 · cited 80 times (Europe PMC)
  • Research article Recommendations for standardization of data collection and analysis of bleeding in combined hormone contraceptive trials [9]
    Mishell DR, Guillebaud J, Westhoff C, Nelson AL, Kaunitz AM, Trussell J, et al. · Contraception · 2007 · cited 73 times (Europe PMC)
  • Research article Cesarean scar defects and abnormal uterine bleeding: a systematic review and meta-analysis [10]
    Murji A, Sanders AP, Monteiro I, Haiderbhai S, Matelski J, Walsh C, et al. · Fertil Steril · 2022 · cited 65 times (Europe PMC)

References

  1. Whitaker L, Critchley HO. Abnormal uterine bleeding. . 2016. PMID 26803558 · DOI · PMC4970656
  2. Mansour D, Verhoeven C, Sommer W, Weisberg E, Taneepanichskul S, Melis GB, et al.. Efficacy and tolerability of a monophasic combined oral contraceptive containing nomegestrol acetate and 17β-oestradiol in a 24/4 regimen, in comparison to an oral contraceptive containing ethinylestradiol and drospirenone in a 21/7 regimen. . 2011. PMID 21995590 · DOI · PMC3233274
  3. Doll KM, Hempstead B, Alson J, Sage L, Lavallee D. Assessment of Prediagnostic Experiences of Black Women With Endometrial Cancer in the United States. . 2020. PMID 32412636 · DOI · PMC7229523
  4. Watad H, Ifrach U, Stockheim D, Yulzari V, Meron OC, Blank M, et al.. The contradictive findings between ultrasound, hysteroscopy and cytokines in women with nonhormonal IUDs suffering from menorrhagia: a prospective study. . 2024. PMID 38492083 · DOI · PMC11018669
  5. Liu Z, Doan QV, Blumenthal P, Dubois RW. A systematic review evaluating health-related quality of life, work impairment, and health-care costs and utilization in abnormal uterine bleeding. Value Health. 2007. PMID 17532811 · DOI
  6. Committee on Practice Bulletins—Gynecology. Practice bulletin no. 128: diagnosis of abnormal uterine bleeding in reproductive-aged women. Obstet Gynecol. 2012. PMID 22914421 · DOI
  7. Bradley LD, Gueye NA. The medical management of abnormal uterine bleeding in reproductive-aged women. Am J Obstet Gynecol. 2016. PMID 26254516 · DOI
  8. van der Voet LF, Vervoort AJ, Veersema S, BijdeVaate AJ, Brölmann HA, Huirne JA. Minimally invasive therapy for gynaecological symptoms related to a niche in the caesarean scar: a systematic review. BJOG. 2014. PMID 24373589 · DOI
  9. Mishell DR, Guillebaud J, Westhoff C, Nelson AL, Kaunitz AM, Trussell J, et al.. Recommendations for standardization of data collection and analysis of bleeding in combined hormone contraceptive trials. Contraception. 2007. PMID 17161117 · DOI
  10. Murji A, Sanders AP, Monteiro I, Haiderbhai S, Matelski J, Walsh C, et al.. Cesarean scar defects and abnormal uterine bleeding: a systematic review and meta-analysis. Fertil Steril. 2022. PMID 35985862 · DOI

About this article

Sources
NLM Medical Subject Headings (definition, synonyms); NCBI PubMed (counts, identifiers); Europe PMC (open-access abstracts and citation counts).
Verification
Every reference was resolved against PubMed on 2026-11-04; title, year and DOI matched.
Review state
automated source verified; no human expert review has been recorded yet.
Version
1, last updated 2026-11-04.

See how EvidenceLib is built. Spotted an error? Email support@evidencehelix.com.

Evidence strength

EvidenceHelix's computed view of the study designs behind this topic: how common meta-analyses, randomized trials and reviews are, how recent the literature is, and a plain-language reading. It describes the design mix of the literature. It is not a quality appraisal of any study, and it is not medical advice.

Included with the Researcher plan

Reading every article stays free. This computed view is part of the paid plans.

See plans Sign in

Your notes

Notes and highlights stay in this browser only; they are not sent to EvidenceHelix.

Related research topics

  • EndometritisKidney, Urology and Women's Health
  • AdenomyosisKidney, Urology and Women's Health
  • Uterine RuptureKidney, Urology and Women's Health
  • Uterine PerforationKidney, Urology and Women's Health
  • Uterine ProlapseKidney, Urology and Women's Health
  • Endometrial HyperplasiaKidney, Urology and Women's Health

All 73 articles in Kidney, Urology and Women's Health →

At a glance

2,563
PubMed records on this heading
4%
published since 2020
144
review articles
96
randomized trials
10
verified references below

Counts come from PubMed on 2026-11-04; they show how much has been written, not how strong the evidence is.

Related topics See all →

  • EndometritisKidney, Urology and Women's Health
  • AdenomyosisKidney, Urology and Women's Health
  • Uterine RuptureKidney, Urology and Women's Health
  • Uterine PerforationKidney, Urology and Women's Health
  • Uterine ProlapseKidney, Urology and Women's Health

My notes & annotations (0)

Nothing yet. Select text and press Highlight, or write a note in the Notes tab. Stored in this browser only.

Sources

  • NLM MeSH record ↗
  • PubMed search used ↗

EvidenceLib is a research-education resource, not medical advice. It does not diagnose, prescribe or recommend starting, stopping or changing any treatment. Talk to a qualified clinician about your own situation. Methods, sources and licences · Rights and removal requests · Legal · Support