Menstrual Cramps: Symptoms and Causes

• Researched and written by: Nishtha Chaudhary, MSc (Digital Marketing Strategy)
• Edited by: Vaibhavi Kodnani
• Medical inputs by: Dr Poonguzhali Liston, MBBS, MS OBG, FMAS, DRM, FRM, CIMP
• Medically reviewed by: Dr Yash Bahuguna, MBBS, MS, DNB, ISGE Certified Practitioner for PCOS

TL;DR

• Painful periods or dysmenorrhea are of two types: primary (not caused by an underlying condition) and secondary (caused by an underlying condition).
  

• Primary dysmenorrhea is triggered by higher levels of prostaglandins in the body. These are natural chemicals that cause the uterus to contract during menstruation.
  

• Secondary dysmenorrhea may result from underlying conditions such as endometriosis, fibroids, or adenomyosis and may require specific medical care.
  

• Management options include heat therapy, non-steroidal anti-inflammatory drugs (NSAIDs), and hormonal treatments.
  

• Menstrual cramps that are severe, unusual, or interfere with daily activities should be evaluated by a medical expert. 

Period Cramps: Symptoms, Timing, and Types

Period cramps are painful sensations in the lower abdomen that can occur just before or during menstruation. The medical term for painful periods is dysmenorrhea.[1] Cramps can vary widely in intensity, duration, and how they feel from one person to another.

They may begin 1–2 days before your period and tend to last for the first 2–3 days of bleeding.[1] For most people, the pain gradually eases as the period progresses.

The pain often feels like a throbbing or sharp cramping sensation in the lower abdomen, sometimes radiating to the lower back and upper thighs.[1,2] For some people, it presents as a dull, continuous ache, while for others it comes in sharp, intense spasms that come and go.

Alongside the cramps, you may also experience symptoms such as:[1]

• Nausea or vomiting

• Bloating

• Diarrhea or loose stools

• Constipation

• Fatigue or weakness

• Headache

• Dizziness 

Some symptoms similar to premenstrual syndrome (PMS), such as irritability, mood swings, and crying spells may continue into the first few days of your period. These experiences can vary each cycle. 

Healthcare professionals classify period pain based on whether an underlying condition is present.[1,3] 

Painful periods without an underlying condition (Primary dysmenorrhea)

Primary dysmenorrhea occurs during adolescence, usually within a couple of years after the first period (menarche).[1] It is the most common form of menstrual cramps and tends to follow a predictable pattern with each cycle. The pain often affects the lower abdomen, may radiate to the lower back and thighs, and can last 8–72 hours.[1,4] For many, it becomes less severe with age, especially after childbirth.[1,3]

Painful periods due to an underlying condition (Secondary dysmenorrhea)

Secondary dysmenorrhea is caused by another condition affecting the reproductive organs. Unlike primary dysmenorrhea, this type of period pain often starts many days before menstruation and lasts longer than typical cramps. Conditions such as endometriosis, pelvic inflammatory disease, uterine fibroids, or adenomyosis may be possible causes.[1,3]  

What Are the Causes of Painful Periods?

Menstrual cramps happen for one of two reasons. Natural processes during menstruation can trigger contractions that cause pain, while an underlying health condition may be the cause of your pain in some cases.

Primary dysmenorrhea

In primary dysmenorrhea, hormone-like chemicals called prostaglandins are the main cause of period pain. They are produced in the lining of the uterus.[1]

Just before menstrual bleeding begins, your prostaglandin levels rise. This triggers a contraction in the wall of the uterus, which helps your body push out blood and tissue.[1] 

Prostaglandins also narrow the blood vessels in the uterus, which may temporarily reduce blood flow and oxygen supply, contributing to pain. Additionally, they may cause localised inflammation in the lower abdomen region and surrounding areas, such as the lower back and thighs. 

When your body produces higher levels of prostaglandins, your uterus may contract more forcefully, leading to menstrual pain.[1]

Secondary dysmenorrhea

Secondary dysmenorrhea is caused by an underlying condition affecting the ovaries or the uterus.[1,3] These conditions often lead to pain and inflammation that persists outside the typical window of menstruation.

Associated symptoms

Some of the most common underlying conditions include:

• Endometriosis: A condition where tissue similar to the lining of the uterus grows outside of the uterus, including on the ovary, fallopian tubes, or other pelvic organs, leading to pain and inflammation.[1,5]
  

• Adenomyosis: A condition where endometrial tissue grows into the muscle wall of the uterus, which can cause heavy bleeding and more intense pain.[1]
  

• Uterine fibroids: Noncancerous growths in the wall of the uterus that may cause pelvic pressure, pain, and heavy menstrual bleeding.[1]
  

• Pelvic inflammatory disease: An infection of the reproductive organs, including the uterus, fallopian tubes, and ovaries, that can lead to pelvic pain and inflammation.[1]
  

• Ovarian cysts: Fluid-filled sacs on the ovaries that may cause discomfort, especially if they grow large or rupture.[1]
  

• Cervical stenosis: Narrowing of the passage that connects the vagina to the uterine cavity (cervical canal), which can obstruct menstrual flow and lead to pressure and pain.[1]
  

• Pelvic adhesions: Thin strands of fibrous connective tissue that can form between pelvic organs, restricting movement and pain during periods.[1]
  

• Müllerian anomalies: Structural issues in the reproductive tract present from birth may contribute to painful menstruation.[1]

What Are the Risk Factors of Painful Periods?

While painful periods can affect anyone who menstruates, certain factors may increase the likelihood or severity of cramps. These include:[1,6]

• Being under the age of 30
  

• Starting your period early (age 11 or younger)
  

• Heavy or irregular bleeding patterns
  

• A family history of painful periods
  

• Smoking[1,6]
  

• A higher or lower than average body mass index (BMI)
  

• Never having given birth

Note on complications: 

• Period pain (primary dysmenorrhea) on its own does not cause any complications. That said, severe cramps may have an impact on daily activities, productivity, quality of sleep, and mood. 

• Secondary dysmenorrhea might cause some complications like heavy bleeding, anemia, and infertility if the underlying conditions are left untreated.[1]

Berry's Insights: The Scales to Measure Period Cramps

Period cramps can feel different each month. Since there is no single test to diagnose them, doctors rely on your symptom tracking and use pain scales to understand the severity of menstrual cramps.

Visual Analog Scale (VAS)

The Visual Analog Scale (VAS) uses a 10-cm line to measure pain intensity. One end represents “no pain,” while the other represents “unbearable pain.” You mark a point on the line that reflects how you feel, helping communicate the severity of your cramps clearly.[7]

Pain is often classified as:

• 1–3: Mild pain
  

• 4–7: Moderate pain
  

• 8–10: Severe pain

Numerical Rating Scale (NRS)

The Numerical Rating Scale (NRS) asks you to rate your pain on a scale from 0 to 10, where 0 means no pain and 10 means the worst pain imaginable. This scale helps track changes in the severity of menstrual cramps over time.[7]

Verbal Rating Scale (VRS)

The Verbal Rating Scale (VRS) uses simple descriptive words such as “mild,” “moderate,” or “severe” to help classify pain intensity. Healthcare providers may use structured tools like the McGill Pain Questionnaire, which combines these descriptors with guided prompts to better understand how pain feels and how much it affects you. This approach offers a more detailed picture of pain beyond numbers or visual scales.[7]

WaLIDD Score

WaLIDD score stands for working ability, location, intensity, days of pain, dysmenorrhea score. It offers a more comprehensive way to assess period cramps by evaluating multiple factors.[8] 

Each parameter has a score of 0–3. The final score is then added up. It can be minimum 0 and maximum 12. 

Working ability: How cramps affect your daily activities

• 0: None

• 1: Almost never

• 2: Almost always

• 3: Always

Location: Where you feel pain, such as the lower belly, back, or legs

• 0: None

• 1: One site

• 2: Two to three sites

• 3: Four sides

Intensity: How strong the pain feels

• 0: Does not hurt

• 1: Hurts a little bit

• 2: Hurts a little more

• 3: Hurts a whole lot

Days of pain: How long the cramps last

• 0: 0 days

• 1: 1–2 days

• 2: 3–4 days

• 3: 5 or more days

How to Relieve Painful Menstrual Periods

Pain during periods can range from mild discomfort to pain that interferes with daily activities. While experiences vary, a combination of home care and medical treatments may help reduce pain and provide comfort.

Home treatment

Heat therapy, Yoga, and breathing exercises are safe, effective, and research-backed home remedies for period pain. 

Heat therapy

Placing a heating pad or hot water bottle on the lower belly can help relax uterine muscles and soothe pain associated with cramping.[2,9] Warm baths and adequate rest can further support overall comfort.

Yoga and breathing exercises

Research suggests that yoga, including gentle postures and breathing exercises, may also help reduce period pain. Yoga, specifically pelvic asanas, improve blood flow to the uterus and release endorphins, your body’s natural painkillers. 

Deep breathing and long exhalation activate the parasympathetic nervous system, which calms the body. Regular practice of these relaxation techniques can also lower stress hormones, reducing inflammation and pain perception.[10] 

Herbal teas

Ginger tea can help relieve cramps by reducing inflammation in the body caused by prostaglandins. Chamomile tea is also beneficial for period pain. It eases uterine muscle contractions, reduces inflammation, and calms the nervous system, helping to lower stress and the perception of pain.

Medical treatment

If home treatments do not provide enough relief, a doctor may recommend medical options to help manage pain.

Disclaimer: Always discuss with a doctor before starting any medical treatment for period pain. The right treatment depends on your individual health history, symptoms, and any underlying conditions.

• Nonsteroidal anti-inflammatory drugs (NSAIDs): NSAIDs work by lowering prostaglandin levels, which helps reduce inflammation and ease pain.[1,2,3,11]
  

• Hormonal birth control: Methods such as the combined oral contraceptive pill, hormonal intrauterine device (IUD), or hormonal patches may help reduce the severity of cramps over time.[1,3]
  

• Stronger or alternative pain relief: If NSAIDs do not provide enough relief, a doctor may suggest another pain reliever or prescribe stronger medication to manage severe menstrual pain.[1]

When Should You See a Doctor?

Mild to moderate period cramps that respond to home care are usually not a cause for concern. However, it may help to consult a healthcare professional if you experience any of the following:[1,2,3]

• Severe or unusual menstrual cramps that are worse than your usual pattern

• Pain that starts several days before a period or continues after it ends

• Pain that does not improve with home remedies or over-the-counter pain relievers

• Pain during sexual intercourse, or symptoms such as fever, unusual discharge, or pain when urinating

• Sudden, intense pelvic pain[1]

• Irregular periods or noticeable changes in your menstrual cycle

• Heavy bleeding that requires changing a pad or tampon every hour

Your doctor may discuss your cycles, symptoms, medical history, and medications. They may also suggest a pelvic exam, ultrasound, laparoscopy, or some other tests to better understand your situation.[2,3]

The Bottom Line

Period cramps are caused by high levels of prostaglandins in the body. These hormone-like chemicals release just before periods to help the uterus contract and shed its lining. Home treatments such as heat therapy, light movement, deep breathing, and ginger or chamomile tea may help ease symptoms. If these strategies don’t help, your doctor may prescribe anti-inflammatory medications or hormonal birth control. 

However, severe and persistent pain may indicate underlying conditions such as endometriosis, fibroids, or adenomyosis.[1,5] In that case, it’s best to seek medical guidance to help with early diagnosis and treatment.

FAQs on Period Cramps

Why are period cramps so painful?

High levels of prostaglandins cause stronger muscle contractions during menstruation, which can reduce blood flow and lead to menstrual pain and discomfort.

What do period cramps feel like?

Period cramps often feel like throbbing or cramping pain in the lower abdomen that may radiate to the lower back or thighs, ranging from a dull ache to sharp spasms.

What is period pain equal to?

Period pain varies widely. Some people experience mild discomfort, while others describe it as similar to strong muscle cramps or intense spasms in the pelvic area.

How can I stop cramps immediately?

While cramps may not stop instantly, using a heating pad or hot water bottle, yoga, or over-the-counter pain relievers may help reduce pain during periods.

At what age do period cramps get worse?

You may notice your cramps more intensely during your late teens and early 20s, though they often become less intense with age as your hormonal patterns change.

Do period cramps improve after giving birth? 

Some people notice less menstruation pain after childbirth, although experiences vary and cramps may persist for others.

References 

1. Nagy H, Carlson K, Khan MA. Dysmenorrhea. InStatPearls [Internet] 2023 Nov 12. StatPearls Publishing.

2. MedlinePlus. Period pain. Accessed [February 25, 2026]. 

3. American College of Obstetricians and Gynecologists. Dysmenorrhea: painful periods. Accessed [February 26, 2026].

4. Triwahyuningsih RY, Rahfiludin MZ, Sulistiyani S, Widjanarko B. Role of stress and physical activity on primary dysmenorrhea: A cross-sectional study. Narra J. 2024 Apr 30;4(1):e685.

5. Rathod S, Shanoo A, Acharya N. Endometriosis: a comprehensive exploration of inflammatory mechanisms and fertility implications. Cureus. 2024 Aug 4;16(8).

6. Qin LL, Hu Z, Kaminga AC, Luo BA, Xu HL, Feng XL, Liu JH. Association between cigarette smoking and the risk of dysmenorrhea: A meta-analysis of observational studies. PloS one. 2020 Apr 15;15(4):e0231201.

7. Stretanski MF, Stinocher S, Grandhe S. Pain assessment. InStatPearls [Internet] 2025 Jun 22. StatPearls Publishing.

8. Teherán AA, Piñeros LG, Pulido F, Mejía Guatibonza MC. WaLIDD score, a new tool to diagnose dysmenorrhea and predict medical leave in university students. International journal of women's health. 2018 Jan 17:35-45.

9. Jo J, Lee SH. Heat therapy for primary dysmenorrhea: A systematic review and meta-analysis of its effects on pain relief and quality of life. Scientific reports. 2018 Nov 2;8(1):16252.

10. Kanchibhotla D, Subramanian S, Singh D. Management of dysmenorrhea through yoga: A narrative review. Frontiers in Pain Research. 2023 Mar 30;4:1107669.

11. Marjoribanks J, Ayeleke RO, Farquhar C, Proctor M, Cochrane Gynaecology and Fertility Group. Nonsteroidal anti‐inflammatory drugs for dysmenorrhoea. Cochrane database of systematic reviews. 1996 Sep 1;2015(7).