Lower Abdomen Pain: Common Causes in Men and Women Explained

Lower abdominal pain is one of the most common reasons people visit a doctor or emergency room. It can be a mild, passing cramp or a severe, debilitating pain that signals a medical emergency. It can last minutes or persist for weeks.

What makes lower abdominal pain challenging is how many organs share that space. The lower abdomen houses parts of the digestive system, the urinary system, and, in women, the entire reproductive system. A problem in any of these can produce pain in the same region.

Understanding the possible causes, and knowing when to seek immediate medical attention, can make a significant difference to outcomes.

This article explains the most common causes of lower abdominal pain in both men and women, as well as conditions specific to each sex, and the warning signs that should never be ignored.

Anatomy of the Lower Abdomen

The lower abdomen is generally defined as the area below the navel and above the pelvic floor. It is divided into three regions:

• Right iliac fossa: The lower right quadrant, where the appendix sits
• Left iliac fossa: The lower left quadrant
• Hypogastric region: The central lower area, also called the suprapubic region

The organs within or near the lower abdomen include:

• The large intestine (colon), particularly the sigmoid colon and rectum
• The small intestine
• The bladder
• The ureters
• The appendix
• In women: the uterus, ovaries, fallopian tubes, and cervix
• In men: the prostate gland, seminal vesicles, and vas deferens

Pain can arise from any of these structures. It can also be referred from elsewhere in the body, felt in the lower abdomen despite originating in a different location.

Causes Common to Both Men and Women

1. Appendicitis

Appendicitis is inflammation of the appendix, a small finger-shaped pouch attached to the large intestine in the lower right abdomen. It is one of the most common causes of acute abdominal pain requiring emergency surgery.

Symptoms include:

• Pain that begins around the navel and shifts to the lower right abdomen over several hours
• The pain typically worsens with movement, deep breathing, coughing, or pressure
• Nausea and vomiting
• Fever, low-grade initially, rising as the condition progresses
• Loss of appetite

Appendicitis is a medical emergency. If the appendix ruptures, infection spreads throughout the abdominal cavity, causing a life-threatening condition called peritonitis. Any suspected appendicitis requires immediate hospital evaluation.

2. Irritable Bowel Syndrome (IBS)

IBS is a chronic functional disorder of the digestive system. It causes recurrent abdominal pain, often in the lower abdomen, along with changes in bowel habits, without any underlying structural disease.

Characteristics of IBS pain:

• Cramping or aching, typically in the lower abdomen
• Pain that is relieved after passing stool or wind
• Associated with diarrhoea, constipation, or alternating between the two
• Bloating and abdominal distension
• Worsened by stress, certain foods, hormonal changes, or caffeine

IBS is a diagnosis of exclusion, other conditions must be ruled out before it is confirmed. It is not dangerous, but it significantly affects quality of life and requires long-term management.

3. Inflammatory Bowel Disease (IBD)

IBD includes Crohn's disease and ulcerative colitis, chronic inflammatory conditions of the digestive tract.

• Crohn's disease can affect any part of the digestive tract and typically causes cramping pain, diarrhoea, weight loss, and fatigue
• Ulcerative colitis affects the colon and rectum, causing lower abdominal pain, bloody diarrhoea, urgency, and cramping

Unlike IBS, IBD involves actual inflammation and damage to the gut lining. It requires medical treatment and monitoring, as it carries a risk of serious complications.

4. Urinary Tract Infection (UTI)

A urinary tract infection occurs when bacteria infect the bladder, urethra, or kidneys. While more common in women, men can develop UTIs too, particularly with age or underlying urological conditions.

Symptoms include:

• Pain or burning during urination
• A frequent, urgent need to urinate, often producing only small amounts
• Suprapubic pain, a dull ache or pressure in the central lower abdomen directly above the pubic bone
• Cloudy or foul-smelling urine
• Blood in the urine (haematuria)
• If the kidneys are involved (pyelonephritis): fever, chills, back pain, and nausea

UTIs are treated with antibiotics. Untreated or recurrent UTIs can lead to kidney damage.

5. Kidney Stones

Kidney stones are hard mineral deposits that form in the kidneys. When a stone passes from the kidney into the ureter, the tube connecting the kidney to the bladder, it causes severe pain.

The pain of a kidney stone is typically:

• Sudden in onset and extremely severe
• Located in the flank (side and back), radiating to the lower abdomen and groin
• Colicky, it comes in waves rather than being constant
• Associated with nausea, vomiting, and restlessness
• Accompanied by blood in the urine

Kidney stones require medical evaluation. Small stones often pass on their own with fluids and pain relief. Larger stones may require lithotripsy (shock wave treatment) or surgical removal.

6. Constipation

Constipation, defined as fewer than three bowel movements per week with hard, difficult-to-pass stools, is a very common cause of lower abdominal discomfort and bloating.

Pain from constipation is typically:

• Dull and cramping
• Associated with a feeling of fullness or pressure in the lower abdomen
• Relieved after passing stool

Chronic constipation requires investigation to rule out underlying causes. In the short term, increased fluid and fibre intake, physical activity, and laxatives where appropriate are effective.

7. Hernia

A hernia occurs when an organ or tissue pushes through a weak spot in the surrounding muscle or connective tissue. Inguinal hernias, which occur in the groin, are far more common in men but can also affect women.

Symptoms include:

• A visible bulge or lump in the groin or lower abdomen
• Aching or discomfort at the site, particularly when bending, coughing, or lifting
• A dragging or heavy sensation

A hernia that becomes strangulated, where the blood supply to the trapped tissue is cut off, is a medical emergency. This causes sudden, severe pain and requires immediate surgery.

8. Muscle Strain

Overuse, sudden exertion, or injury to the abdominal or hip flexor muscles can cause lower abdominal pain that is easily mistaken for a visceral problem.

Key features:

• Pain that worsens with specific movements, particularly twisting, bending, or coughing
• Tenderness on pressing the abdominal wall
• No associated urinary, digestive, or reproductive symptoms

Rest, gentle stretching, and physiotherapy are the main treatments.

9. Gas and Bloating

Trapped gas in the digestive tract is a common and benign cause of lower abdominal pain. It produces sharp, cramping pains that move around the abdomen and are relieved by passing wind or having a bowel movement.

Causes Specific to Women

10. Menstrual Cramps (Dysmenorrhoea)

Menstrual cramps are the most common cause of recurring lower abdominal pain in women of reproductive age. They result from uterine contractions driven by prostaglandins.

• Primary dysmenorrhoea: Painful periods with no underlying disease. The pain is cramping, felt in the central lower abdomen, and may radiate to the back and thighs. It typically begins one to two days before the period and eases within two to three days.
• Secondary dysmenorrhoea: Painful periods caused by an underlying condition such as endometriosis or fibroids. The pain is often more severe, longer-lasting, and may occur throughout the cycle.

11. Endometriosis

Endometriosis is a condition in which tissue similar to the uterine lining grows outside the uterus, on the ovaries, fallopian tubes, bladder, or bowel. It affects approximately one in ten women of reproductive age.

Symptoms include:

• Chronic pelvic pain, often worse before and during menstruation
• Painful intercourse
• Heavy or irregular periods
• Painful urination or bowel movements during menstruation
• Difficulty conceiving

Endometriosis is frequently under-diagnosed. The average time from symptom onset to diagnosis is seven to ten years. Any woman with severe, recurring pelvic pain should be assessed for this condition.

12. Ovarian Cysts

Ovarian cysts are fluid-filled sacs that develop on or within an ovary. Most are functional and resolve on their own. Some cause pain.

Symptoms when a cyst causes problems:

• A dull ache or pressure on one side of the lower abdomen
• Pain that worsens during menstruation or sexual activity
• Bloating or a feeling of fullness

A ruptured or twisted ovarian cyst (ovarian torsion) is a medical emergency, causing sudden, severe one-sided pain, nausea, and vomiting requiring immediate surgical intervention.

13. Pelvic Inflammatory Disease (PID)

PID is an infection of the female reproductive organs, the uterus, fallopian tubes, and ovaries, most commonly caused by sexually transmitted bacteria.

Symptoms include:

• Lower abdominal pain, often bilateral
• Abnormal vaginal discharge
• Fever
• Pain during intercourse
• Irregular bleeding

Untreated PID can cause scarring of the fallopian tubes, increasing the risk of ectopic pregnancy and infertility. Early antibiotic treatment is essential.

14. Ectopic Pregnancy

An ectopic pregnancy occurs when a fertilised egg implants outside the uterus, most commonly in a fallopian tube. It is a life-threatening emergency.

Symptoms include:

• One-sided lower abdominal pain, initially mild and worsening sharply
• Vaginal bleeding, often lighter than a normal period
• Shoulder tip pain (referred from internal bleeding)
• Dizziness, fainting, or collapse if the tube ruptures

Any woman of reproductive age with lower abdominal pain and a missed period must have a pregnancy test and urgent medical evaluation. A ruptured ectopic pregnancy can be fatal within hours.

15. Uterine Fibroids

Fibroids are non-cancerous growths of the uterine muscle. They are extremely common, affecting up to 70% of women by the age of 50 and many cause no symptoms.

When symptomatic, they produce:

• Pelvic pressure or heaviness
• Heavy, prolonged periods
• Frequent urination
• Lower back pain
• Difficulty with bowel movements

Causes Specific to Men

16. Prostatitis

Prostatitis is inflammation of the prostate gland. It can be bacterial (acute or chronic) or non-bacterial.

Symptoms include:

• Pain in the perineum, lower abdomen, or groin
• Painful or difficult urination
• Frequent urge to urinate
• Pain after ejaculation
• Flu-like symptoms in acute bacterial prostatitis, fever, chills, and nausea

Acute bacterial prostatitis requires urgent antibiotic treatment.

17. Epididymitis and Orchitis

Epididymitis is inflammation of the epididymis, the tube at the back of the testicle. Orchitis is inflammation of the testicle itself. Both can cause referred pain in the lower abdomen.

Symptoms include:

• Scrotal or testicular pain and swelling
• Lower abdominal or groin aching
• Painful urination
• Discharge from the urethra

They are most commonly caused by bacterial infection, including sexually transmitted infections, and are treated with antibiotics.

18. Testicular Torsion

Testicular torsion occurs when the spermatic cord, which supplies blood to the testicle, becomes twisted, cutting off the blood supply. It is a urological emergency.

Symptoms include:

• Sudden, severe pain in one testicle that may radiate to the lower abdomen
• Nausea and vomiting
• Swelling and redness of the scrotum
• One testicle positioned higher than normal

Testicular torsion requires emergency surgery within six hours to save the testicle. Any sudden severe scrotal or lower abdominal pain in a male should be treated as an emergency.

Warning Signs That Require Immediate Medical Attention

Lower abdominal pain should be treated as an emergency in the following situations:

• Sudden, severe pain that comes on without warning
• Pain accompanied by fever above 38.5°C
• Vomiting that cannot be controlled
• Rigid or board-like abdomen
• Signs of shock like pale, clammy skin, rapid breathing, dizziness, or fainting
• Blood in the urine, stool, or vaginal bleeding outside a normal period
• Suspected ectopic pregnancy in a woman of reproductive age
• Sudden severe scrotal pain in a male
• Pain following recent abdominal trauma or surgery

Do not wait to see if these symptoms improve. They require urgent evaluation.

How Is Lower Abdominal Pain Diagnosed?

A thorough assessment includes:

• Medical history: The location, character, onset, severity, and associated symptoms of the pain
• Physical examination: Abdominal palpation, checking for tenderness, guarding, and any masses
• Blood tests: Full blood count, inflammatory markers (CRP, ESR), kidney and liver function tests
• Urine analysis: To identify infection, blood, or kidney stones
• Pregnancy test: In all women of reproductive age presenting with lower abdominal pain
• Ultrasound: The first-line imaging for most lower abdominal and pelvic conditions
• CT scan: Used for more detailed assessment, particularly for suspected appendicitis, kidney stones, or complex abdominal pathology
• MRI: For soft tissue assessment, particularly in gynaecological conditions
• Laparoscopy: A surgical procedure used for both diagnosis and treatment of conditions such as endometriosis, ovarian cysts, and ectopic pregnancy

At Prakash Hospital, Noida

Experiencing lower abdominal pain you cannot explain? Do not dismiss it. The cause matters and early diagnosis makes all the difference.

Prakash Hospital, Noida offers 24-hour emergency care, comprehensive diagnostic services, and specialist consultations across Medicine, Surgery, Gynaecology, and Urology.

Call us at: +91 88260 00033

Website: www.prakashhospitals.in

Address: D-12A, 12B, Sector 33, Noida

We are here when you need us.

Frequently Asked Questions (FAQs)

Q1. When is lower abdominal pain serious?

Lower abdominal pain is serious when it is sudden and severe, associated with fever, accompanied by vomiting or inability to pass stool or wind, associated with blood in the urine or stool, or when it occurs in a pregnant woman. These situations require emergency evaluation.

Q2. Can stress cause lower abdominal pain?

Yes. The gut is highly sensitive to psychological stress. Stress activates the gut-brain axis and can cause cramping, bloating, and altered bowel habits. Stress-related abdominal pain is most commonly associated with IBS.

Q3. Is lower abdominal pain always gynaecological in women?

No. While the reproductive organs are a common source of pain in women, many non-gynaecological conditions like appendicitis, UTI, IBS, kidney stones, and constipation also cause lower abdominal pain. A thorough evaluation is needed to identify the correct cause.

Q4. What does appendicitis pain feel like?

Appendicitis typically begins as a dull ache around the navel that migrates to the lower right abdomen over several hours. It worsens progressively and is aggravated by movement. It is accompanied by nausea, loss of appetite, and usually fever.

Q5. Can a kidney stone cause lower abdominal pain?

Yes. As a kidney stone passes from the kidney into the ureter and towards the bladder, the pain travels from the back and flank downward into the lower abdomen and groin. This pattern of radiating pain is characteristic.

Q6. Should I go to the emergency room for lower abdominal pain?

Go to the emergency room if the pain is sudden and severe, if you have a fever, if you are pregnant and experiencing abdominal pain, if you cannot keep fluids down, or if you have any of the warning signs listed in this article. For mild, chronic, or recurring pain without emergency features, a planned appointment with a doctor is appropriate.