164:
generally refers to infrequent menstruation, More strictly, it is menstrual periods occurring at intervals of greater than 35 days, with only four to nine periods in a year. Menstrual periods should have been regularly established before the development of infrequent flow and often (but not always)
165:
involves irregular intervals. In contrast to "irregular cycles", the interval between one cycle and the next may be consistent but can be regarded as "irregular" compared to the cycle length of a female without oligomenorrhea. Women with oligomenorrhea often have irregular cycles as well.
158:. The distinction between irregular cycle lengths and metrorrhagia is not always clear. It may depend on whether the bleeding is regarded as marking the menstrual period (favoring the term "irregular cycles") or being separate from it (favoring the term "metrorrhagia").
119:
Alternatively, a single menstruation cycle may be defined as irregular if it is less than 24 days or more than 38 days. If they are regularly shorter than 21 days or longer than 36 (or 35) days, the condition is termed
95:
between expected periods). The possible causes of irregular menstruation may vary. The common factors of it are related to lifestyle, such as stress, body weight, and smoking status. Several studies indicate that
789:
555:
416:
LaganĂ , Antonio Simone; Veronesi, Giovanni; Ghezzi, Fabio; Ferrario, Marco Mario; Cromi, Antonella; Bizzarri, Mariano; Garzon, Simone; Cosentino, Marco (2022-01-01).
251:
LaganĂ , Antonio Simone; Veronesi, Giovanni; Ghezzi, Fabio; Ferrario, Marco Mario; Cromi, Antonella; Bizzarri, Mariano; Garzon, Simone; Cosentino, Marco (2022-01-01).
359:
Edelman, Alison; Boniface, Emily R.; Benhar, Eleonora; Han, Leo; Matteson, Kristen A.; Favaro, Carlotta; Pearson, Jack T.; Darney, Blair G. (2022-05-05).
974:
360:
135:. However, other studies suggest that it can take anywhere between 2 and 7 years to establish regularity after an individual's first menses.
100:
of any type may disrupt the menstrual cycle, although only momentarily. This side effect should resolve on its own in the following month.
112:. An individual usually experiences cycle length variations of up to eight days between the shortest and longest cycle lengths. Lengths
829:
308:
Muhaidat, Nadia; Alshrouf, Mohammad A.; Azzam, Muayad I.; Karam, Abdulrahman M.; Al-Nazer, Majed W.; Al-Ani, Abdallah (2022-03-28).
577:
Zhang, Katie; Pollack, Staci; Ghods, Ali; Dicken, Carrie; Isaac, Barbara; Adel, Goli; Zeitlian, Gohar; Santoro, Nanette (2008).
952:
942:
116:
between eight and 20 days are considered moderately irregular. Variation of 21 days or more is considered very irregular.
1098:
171:
is the medical term for cycles with intervals of 21 days or fewer. It can be regarded as the opposite of oligomenorrhea.
485:
131:
Additionally, irregular menstruation is common in adolescence. A regular menstrual cycle can be set within a year of
530:
1121:
1108:
361:"Association Between Menstrual Cycle Length and Coronavirus Disease 2019 (COVID-19) Vaccination: A U.S. Cohort"
669:
Engle, E.T.; SHELESNYAK, M.C. (1934). "First
Menstruation and Subsequent Menstrual Cycles of Pubertal Girls".
822:
1278:
1142:
1093:
52:
Change in the flow of menstrual bleeding, Change in the duration of periods, Change in menstrual cycle.
1037:
947:
1252:
1232:
1194:
815:
418:"Evaluation of menstrual irregularities after COVID-19 vaccination: Results of the MECOVAC survey"
253:"Evaluation of menstrual irregularities after COVID-19 vaccination: Results of the MECOVAC survey"
979:
911:
630:"Rapid Maturation of the Reproductive Axis during Perimenarche Independent of Body Composition"
501:
310:"Menstrual Symptoms After COVID-19 Vaccine: A Cross-Sectional Investigation in the MENA Region"
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Other types of conditions that can be referred to by "irregular menstruation" include:
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155:
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97:
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746:
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Legro, Richard S.; Lin, Hung Mo; Demers, Laurence M.; Lloyd, Tom (March 1, 2000).
556:"Menstruation in Girls and Adolescents: Using the Menstrual Cycle as a Vital Sign"
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838:
376:
109:
1247:
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Irregular cycles or irregular periods is an abnormal variation in length of
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480:(4th ed.). Cincinnati, OH: The Couple to Couple League. p. 92.
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781:
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997:
67:
40:
697:
1202:
888:
862:
747:"Vaginal bleeding between periods: MedlinePlus Medical Encyclopedia"
194:"Factors associated with menstrual cycle irregularity and menopause"
883:
525:
523:
521:
132:
807:
698:"Variation of the human menstrual cycle through reproductive life"
579:"Onset of Ovulation after Menarche in Girls: A Longitudinal Study"
518:
87:
whose manifestations include irregular cycle lengths as well as
1242:
1162:
793:
696:
Treloar, A.E.; Boynton, R.E.; Behn, B.G.; Brown, B.W. (1967).
415:
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695:
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558:. American College of Obstetricians and Gynecologists
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192:
Bae, Jinju; Park, Susan; Kwon, Jin-Won (2018-02-06).
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The
Journal of Clinical Endocrinology and Metabolism
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The
Journal of Clinical Endocrinology and Metabolism
627:
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975:Extended cycle combined hormonal contraceptive
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719:Vollman, R.F. (1977). "The Menstrual Cycle".
721:Major Problems in Obstetrics and Gynecology
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314:International Journal of Women's Health
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476:Kippley, John; Sheila Kippley (1996).
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531:"What are menstrual irregularities?"
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30:Irregular cycles, irregular periods
13:
702:International Journal of Fertility
478:The Art of Natural Family Planning
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154:that occurs between the expected
708:(2): 77–126 – via POPLINE.
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62:Based on physical examination
1143:Menstrual hygiene management
1094:Premenstrual water retention
1068:Polymenorrhea (epimenorrhea)
1033:Menorrhagia (hypermenorrhea)
727:. W.B. Saunders Co.: 1–193.
377:10.1097/AOG.0000000000004695
150:, which generally refers to
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365:Obstetrics & Gynecology
104:Irregular cycles or periods
10:
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1038:Metropathia haemorrhagica
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948:Billings Ovulation Method
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211:10.1186/s12905-018-0528-x
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1253:Sustainable menstruation
1233:Menstruation celebration
1195:In culture and religion
1023:Irregular menstruation
980:Lactational amenorrhea
943:Calendar-based methods
912:Basal body temperature
647:10.1210/jcem.85.3.6423
81:Irregular menstruation
22:Irregular menstruation
1223:Menstrual suppression
1185:Menstrual Hygiene Day
1117:Premenstrual syndrome
797:: N92.1, N92.5, N92.6
434:10.1515/med-2022-0452
269:10.1515/med-2022-0452
735:– via POPLINE.
596:10.1210/jc.2007-1846
327:10.2147/IJWH.S352167
1279:Menstrual disorders
1158:Cloth menstrual pad
1127:Menstrual psychosis
1089:Menstrual synchrony
938:Fertility awareness
73:birth control pills
502:"Period problems?"
198:BMC Women's Health
85:menstrual disorder
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846:Events and phases
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537:. 31 January 2017
156:menstrual periods
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58:Diagnostic method
16:Medical condition
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1238:Menstruation hut
1218:Menstrual stigma
1178:Period underwear
1148:Feminine hygiene
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1048:Oligoamenorrhea
1008:Cryptomenorrhea
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853:Menstruation
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1003:Anovulation
967:Suppression
877:Life stages
320:: 395–404.
139:Other types
27:Other names
1258:Tampon tax
998:Amenorrhea
756:2018-11-07
541:2018-11-07
511:2018-11-07
179:References
68:Medication
41:Gynecology
1203:Chhaupadi
990:Disorders
889:Menopause
863:Ovulation
442:2391-5463
385:0029-7844
277:2391-5463
220:1472-6874
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1273:Category
1208:In Islam
898:Tracking
884:Menarche
683:41447202
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615:18252789
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346:35378876
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1136:Hygiene
931:Systems
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337:8976114
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229:5801702
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1163:Tampon
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564:2020
482:ISBN
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399:PMID
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216:ISSN
790:ICD
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