Reviewed By:
Ravi P. Chokshi, MD (Obstetrics and Gynecology (OBGYN), Critical Care)
Current Maternal Fetal Medicine Fellow with Dual board certification in Obstetrics & Gynecology and Critical Care Medicine. | 5+ years experience managing a general Ob/Gyn practice and working in the Intensive Care Unit. | Previously Physician Lead of a large single specialty practice with 8 Physicians and 10+ Advanced practitioners. | Member of the Society of Maternal Fetal Medicine Patient education committee. | Frequent Medscape Consult contributor.
Seiji Kanazawa, MD, PHD (Obstetrics and Gynecology (OBGYN))
Dr. Kanazawa graduated from the Niigata University Faculty of Medicine and received his Ph.D. from the Tohoku University Graduate School of Medicine. He is working on the front line of the General Perinatal Center, including the Tokyo Tama General Medical Center and the National Center for Research in Fertility Medicine, where he provides maternal and fetal care and undertakes clinical research. At Ubie, Dr. Kanazawa has been designing the Ubie AI Symptom Checker and has taken on the role of general obstetrics and gynecology consultation at FMC Tokyo Clinic by providing fetal ultrasound and prenatal consultation.
Content updated on Nov 15, 2024
Following the Medical Content Editorial Policy
Worried about your symptoms?
Start the Irregular Periods test with our free AI Symptom Checker.
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Try one of these related symptoms.
Irregular periods
Absent periods
Menstrual delay
Two periods in one month
Periods occurring more frequently than 24 days
Periods occurring too frequently
Menstrual disorder
Menstruation has not occured
No periods for the past few months
Menstruation stopped
Infrequent periods (fewer than 6-8 a year)
Late period
With a free 3-min Irregular Periods quiz, powered by Ubie's AI and doctors, find possible causes of your symptoms.
This questionnaire is customized to your situation and symptoms, including the following personal information:
Biological Sex - helps us provide relevant suggestions for male vs. female conditions.
Age - adjusts our guidance based on any age-related health factors.
History - considers past illnesses, surgeries, family history, and lifestyle choices.
Your symptoms
Our AI
Your report
Your personal report will tell you
✔ When to see a doctor
✔︎ What causes your symptoms
✔︎ Treatment information etc.
Irregular periods mean that the timing of them is irregular and unpredictable. The normal length of the menstrual cycle is typically between 21 and 35 days. A normal menstrual period generally lasts up to 7 days. If the time between periods varies significantly, then it is considered abnormal.
Seek professional care if you experience any of the following symptoms
Generally, Irregular periods can be related to:
A condition where menarche (first period for a girl) does not occur on time. Typically absence of first period by age 15 is considered abnormal, but this does vary by ethnicity and location. Causes include problems with malnutrition, genetic disorders, formation of the reproductive system and hormonal imbalances. Primary amenorrhea typically needs evaluation with a specialist to find the correct diagnosis and treatment.
A condition where menstruation does not occur regularly due to the failure of an egg to be released from the ovaries. This causes irregular menstruation with skipped months, and can be heavy in nature. The failure of ovulation (egg release) can be caused by hormonal imbalances, being overweight or extremely underweight, thyroid disorders and uncontrolled diabetes to name a few examples.
Pregnancy is the term used for the period when a fetus (baby) is developing inside the mother's uterus (womb). It typically lasts about 40 weeks (just over 9 months), measured from the last menstrual period to delivery. It occurs as a result of sexual intercourse, when the egg released by the female ovary is fertilized by a sperm. Pregnancy is medically divided into three parts (trimesters). The first sign of pregnancy is typically a missed period. Morning sickness (nausea/vomiting) may accompany it.
Your doctor may ask these questions to check for this symptom:
Menstruation in Girls and Adolescents: Using the Menstrual Cycle as a Vital Sign
https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2015/12/menstruation-in-girls-and-adolescents-using-the-menstrual-cycle-as-a-vital-signACOG Patient FAQ - AUB
https://www.acog.org/womens-health/faqs/abnormal-uterine-bleedingACOG Patient FAQ - Heavy and abnormal periods
https://www.acog.org/womens-health/faqs/heavy-and-abnormal-periodsDiagnosis of Abnormal Uterine Bleeding in Reproductive-Aged Women
https://www.acog.org/clinical/clinical-guidance/practice-bulletin/articles/2012/07/diagnosis-of-abnormal-uterine-bleeding-in-reproductive-aged-womenReviewed By:
Ravi P. Chokshi, MD (Obstetrics and Gynecology (OBGYN), Critical Care)
Current Maternal Fetal Medicine Fellow with Dual board certification in Obstetrics & Gynecology and Critical Care Medicine. | 5+ years experience managing a general Ob/Gyn practice and working in the Intensive Care Unit. | Previously Physician Lead of a large single specialty practice with 8 Physicians and 10+ Advanced practitioners. | Member of the Society of Maternal Fetal Medicine Patient education committee. | Frequent Medscape Consult contributor.
Seiji Kanazawa, MD, PHD (Obstetrics and Gynecology (OBGYN))
Dr. Kanazawa graduated from the Niigata University Faculty of Medicine and received his Ph.D. from the Tohoku University Graduate School of Medicine. He is working on the front line of the General Perinatal Center, including the Tokyo Tama General Medical Center and the National Center for Research in Fertility Medicine, where he provides maternal and fetal care and undertakes clinical research. At Ubie, Dr. Kanazawa has been designing the Ubie AI Symptom Checker and has taken on the role of general obstetrics and gynecology consultation at FMC Tokyo Clinic by providing fetal ultrasound and prenatal consultation.
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My experience was great. I was worried, but the symptom checker helped me narrow down what it might be. I feel a little relieved compared to when I first started, and it gives me a starting point for what my symptoms could mean.
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Male, 50s
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(Sep 25, 2024)
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Ubie’s symptom checker demonstrated a Top-10 hit accuracy of 71.6%, surpassing the performance of several leading symptom checkers in the market, which averaged around 60% accuracy in similar assessments.
Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1