Abdominal Pain - Causes, Treatment & When to See a Doctor

What is Abdominal Pain?

Abdominal pain, often described as a “stomach ache,” is discomfort that occurs anywhere between the chest and the groin. It can be sharp, cramping, burning, or dull and may be constant or come and go. Because the abdomen houses many organs—including the stomach, intestines, liver, gallbladder, pancreas, kidneys, and reproductive organs—pain in this region can arise from a wide variety of sources. The intensity, location, and timing of the pain, together with accompanying symptoms, help clinicians narrow down the underlying cause.

Most episodes are benign and resolve on their own, but some represent serious medical emergencies. Understanding the typical patterns of abdominal pain can empower you to seek appropriate care promptly.

Common Causes

Below are 10 of the most frequently encountered conditions that produce abdominal pain. They are grouped by the organ system most often involved.

• Gastroenteritis (stomach flu) – Viral or bacterial infection of the intestines causing crampy pain, diarrhea, and vomiting.¹
• Peptic ulcer disease – Erosion of the stomach or duodenal lining leading to burning pain, often relieved by food or antacids.²
• Gallstones (cholelithiasis) / Biliary colic – Stones block the cystic duct, producing sudden, intense right‑upper‑quadrant pain after fatty meals.³
• Appendicitis – Inflammation of the appendix that typically starts as vague periumbilical pain and migrates to the lower right abdomen.⁴
• Diverticulitis – Inflamed pouches (diverticula) in the colon, most often causing left‑lower‑quadrant pain and fever.⁵
• Irritable bowel syndrome (IBS) – Functional disorder with recurrent abdominal pain linked to changes in bowel habits, without structural disease.⁶
• Kidney stones (nephrolithiasis) – Hard mineral deposits that travel through the urinary tract, causing severe flank pain that may radiate to the groin.⁷
• Pancreatitis – Inflammation of the pancreas, often due to gallstones or alcohol, producing a deep, steady epigastric pain that may radiate to the back.⁸
• Ectopic pregnancy – Implantation of a fertilized egg outside the uterus, most commonly in the fallopian tube, leading to unilateral lower‑abdominal pain and vaginal bleeding.⁹
• Inflammatory bowel disease (Crohn’s disease or ulcerative colitis) – Chronic inflammation of the gastrointestinal tract causing crampy pain, diarrhea, and weight loss.¹⁰

Associated Symptoms

Abdominal pain rarely occurs in isolation. The presence of other signs can help pinpoint the cause and determine urgency.

• Fever or chills
• Nausea and/or vomiting
• Diarrhea or constipation
• Bloody or tarry stools
• Loss of appetite
• Unexplained weight loss
• Jaundice (yellowing of skin/eyes)
• Changes in urinary frequency or pain with urination
• Pelvic pain or abnormal vaginal bleeding (in women)
• Shortness of breath or rapid heartbeat (possible sign of internal bleeding)

When to See a Doctor

Most mild abdominal discomfort can be monitored at home, but you should schedule a medical evaluation if any of the following occur:

• Pain that is severe, persistent, or worsening over several hours.
• Pain accompanied by fever >101°F (38.3°C).
• Vomiting that is forceful, contains blood, or does not improve.
• Bloody, black, or tarry stools.
• Sudden swelling or a feeling of fullness in the abdomen.
• Inability to pass gas or have a bowel movement (possible obstruction).
• Persistent pain after a traumatic injury.
• Women who are pregnant, have missed a period, or notice vaginal bleeding.
• Any new, unexplained pain in a child under 12 months of age.

Diagnosis

Diagnosing abdominal pain involves a systematic approach that combines history‑taking, physical examination, and targeted testing.

1. Medical History

• Onset, duration, and pattern of pain (steady vs. intermittent).
• Exact location and radiation (e.g., “pain moves to my back”).
• Character of pain (sharp, burning, cramping).
• Aggravating and relieving factors (food, movement, antacids).
• Recent travel, sick contacts, medication use (especially NSAIDs, antibiotics, or iron supplements).
• Gynecologic history in women (menstrual cycle, pregnancy status, contraceptive use).

2. Physical Examination

• Inspection for distention, scars, or visible pulsations.
• Auscultation for bowel sounds (hyperactive, absent, or high‑pitched).
• Palpation to assess tenderness, guarding, rebound, or masses.
• Special tests such as the McBurney’s point tenderness for appendicitis or the Murphy’s sign for gallbladder disease.

3. Laboratory Tests

• Complete blood count (CBC) – looks for infection or anemia.
• Basic metabolic panel – evaluates electrolytes, kidney function.
• Liver function tests and pancreatic enzymes (amylase, lipase).
• Urinalysis – screens for urinary tract infection or hematuria from stones.
• Pregnancy test – essential for any woman of child‑bearing age.

4. Imaging Studies

• Ultrasound – First‑line for gallbladder, liver, kidneys, and pelvic organs.
• Computed tomography (CT) scan – Provides detailed cross‑sectional images; gold standard for appendicitis, diverticulitis, and many intra‑abdominal emergencies.
• Magnetic resonance imaging (MRI) – Useful in pregnant patients or when radiation avoidance is preferred.
• Endoscopy / Colonoscopy – Direct visualization of the upper or lower GI tract when ulcer disease, IBD, or malignancy is suspected.

Treatment Options

Treatment is tailored to the underlying cause, severity of symptoms, and patient’s overall health.

1. Home Care for Mild, Self‑Limiting Pain

• Hydration – Sip clear fluids; oral rehydration solutions help replace lost electrolytes.
• Dietary modifications – Follow the BRAT diet (bananas, rice, applesauce, toast) for gastroenteritis; avoid fatty, spicy, or high‑fiber foods until symptoms improve.
• Heat therapy – A warm compress or heating pad can relax abdominal muscles and reduce cramping.
• Over‑the‑counter (OTC) analgesics – Acetaminophen is generally safe; avoid NSAIDs (ibuprofen, naproxen) if you suspect ulcer disease or kidney stones.
• Antispasmodics – Medications such as dicyclomine may help with IBS‑related cramping.

2. Prescription Medications

• Antibiotics for bacterial infections (e.g., diverticulitis, urinary tract infection).
• Proton‑pump inhibitors (PPIs) or H2 blockers for peptic ulcer disease and gastroesophageal reflux.
• Antiemetics (ondansetron, promethazine) for persistent nausea/vomiting.
• Pancreatic enzyme supplements for chronic pancreatitis.
• Hormonal therapy or antibiotics for pelvic inflammatory disease.

3. Procedural and Surgical Interventions

• Appendectomy – Laparoscopic removal of an inflamed appendix.
• Cholecystectomy – Surgical removal of the gallbladder for symptomatic gallstones.
• Endoscopic removal of gastric or duodenal ulcers, or dilation of strictures.
• Stone extraction – Ureteroscopy or lithotripsy for kidney stones.
• Drainage procedures – Percutaneous drainage of abscesses or infected fluid collections.

4. Lifestyle & Long‑Term Management

• Smoking cessation and limiting alcohol intake to reduce ulcer and pancreatitis risk.
• Regular physical activity to promote healthy bowel motility.
• Balanced diet rich in fiber, fruits, and vegetables to prevent constipation and diverticular disease.
• Stress‑reduction techniques (mindfulness, yoga) for functional disorders like IBS.

Prevention Tips

While not all abdominal pain can be avoided, many common causes are modifiable through lifestyle choices and preventive health measures.

• Vaccinate against hepatitis A and B, and stay up‑to‑date on rotavirus and other gastrointestinal infection vaccines.
• Practice hand hygiene and safe food handling to reduce gastroenteritis risk.
• Maintain a healthy weight to lower the chance of gallstones and reflux.
• Limit excessive alcohol and avoid binge drinking to protect the pancreas and liver.
• Use NSAIDs sparingly and always with food if you have a history of ulcers.
• Stay well‑hydrated and drink enough water to prevent kidney stone formation.
• Schedule regular screenings (colonoscopy, abdominal ultrasound) as recommended for your age and risk factors.
• For women, attend routine gynecologic exams and discuss any abnormal bleeding promptly.

Emergency Warning Signs

References

1. Mayo Clinic. Gastroenteritis. 2023. https://www.mayoclinic.org
2. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Peptic Ulcer. 2022. https://www.niddk.nih.gov
3. American College of Gastroenterology. Gallstone Disease. 2021. https://gi.org
4. CDC. Appendicitis. 2023. https://www.cdc.gov
5. Cleveland Clinic. Diverticulitis. 2022. https://my.clevelandclinic.org
6. Mayo Clinic. Irritable Bowel Syndrome (IBS). 2023. https://www.mayoclinic.org
7. NIH National Institute of Diabetes and Digestive and Kidney Diseases. Kidney Stones. 2022. https://www.niddk.nih.gov
8. Harvard Health Publishing. Pancreatitis. 2023. https://www.health.harvard.edu
9. World Health Organization. Ectopic Pregnancy. 2022. https://www.who.int
10. American College of Gastroenterology. Inflammatory Bowel Disease. 2023. https://gi.org