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Gastroenterology · August 23, 2026 · 12 min read

Stomach Pain: 12 Common Causes and When to See a Gastroenterologist

By Dr. Vikas Sengar

Stomach Pain: 12 Common Causes and When to See a Gastroenterologist

Key takeaways

  • Abdominal pain is a broad symptom indicating potential issues in organs like the stomach, liver, gallbladder, or intestines.
  • Common causes range from benign indigestion and IBS to acute appendicitis or chronic inflammatory bowel disease.
  • The location of the pain (upper vs. lower abdomen) and timing (such as after eating) help identify potential causes.
  • Red-flag symptoms like high fever, vomiting blood, or severe sudden pain require immediate emergency evaluation.

Abdominal pain, commonly referred to as stomach pain, is one of the most frequent reasons people seek medical advice. Almost everyone experiences abdominal discomfort at some point, and in most cases, it is temporary and not a cause for concern. However, because the abdomen houses many vital organs—including the stomach, intestines, liver, gallbladder, and pancreas—persistent or severe pain should never be ignored. In Kanpur, a busy lifestyle, dietary habits rich in fried or spicy food, and stress can often exacerbate digestive symptoms. While it is tempting to rely on home remedies or quick-relief pills, getting an accurate diagnosis is key to effective treatment. If you are experiencing chronic or severe discomfort, consulting a qualified stomach pain specialist in Kanpur is essential for finding long-term relief and preventing potential complications. In this comprehensive, patient-friendly guide, we will discuss what abdominal pain means, outline 12 common causes, explain different pain scenarios, and detail when you should see a gastroenterologist in Kanpur.

What Does Stomach or Abdominal Pain Mean?

Abdominal pain is pain or discomfort felt anywhere in the region between the chest and the groin. It is important to understand that abdominal pain is a symptom, not a disease. The severity of the pain does not always reflect the seriousness of the underlying cause. For instance, temporary gas buildup can cause intense, sharp pain, while early-stage colon cancer or a developing ulcer might cause only a mild, dull ache. Because the abdomen contains organs from the digestive, urinary, and reproductive systems, the pain can arise from inflammation, infection, muscle spasms, tissue blockages, or motility issues. A specialized evaluation helps pinpoint the source of the discomfort without making assumptions.

12 Common Causes of Stomach Pain

Abdominal pain can stem from various sources. Here are 12 of the most common causes evaluated by gastroenterologists:

1. Indigestion (Dyspepsia)

Indigestion is a general term describing discomfort in the upper abdomen. It is characterized by feeling full too quickly during a meal, uncomfortable fullness after eating, bloating, and mild nausea. It is often triggered by eating spicy, oily, or large meals, and is highly common in North India.

2. Gastritis

Gastritis is the inflammation of the protective lining of the stomach. It can be acute (sudden and severe) or chronic (developing slowly over time). Symptoms include a burning or gnawing ache in the upper abdomen, bloating, belching, and a feeling of fullness after eating.

3. Peptic Ulcer Disease (PUD)

Peptic ulcers are open sores that develop on the inside lining of your stomach (gastric ulcers) and the upper part of your small intestine (duodenal ulcers). The most common causes are H. pylori bacterial infections and frequent use of painkillers. A classic symptom is burning stomach pain that worsens when the stomach is empty.

4. Gastroesophageal Reflux Disease (GERD)

GERD is a chronic condition where stomach acid frequently flows back into the esophagus. This backwash (acid reflux) irritates the lining of the food pipe, causing a burning sensation in the chest (heartburn) and sometimes radiating as upper abdominal discomfort.

5. Gallstones (Cholelithiasis)

Gallstones are hardened deposits of digestive fluid that form in the gallbladder. If a stone blocks the bile ducts, it triggers a sudden, severe pain in the upper right side of the abdomen (biliary colic) that can last for several hours and may radiate to the back or right shoulder.

6. Irritable Bowel Syndrome (IBS)

IBS is a common functional gastrointestinal disorder that affects the large intestine. It is characterized by abdominal pain, cramping, bloating, gas, and changes in bowel habits (alternating diarrhea and constipation). The pain is often relieved after a bowel movement.

7. Inflammatory Bowel Disease (IBD)

IBD includes chronic inflammatory disorders of the GI tract, primarily Crohn's Disease and Ulcerative Colitis. It causes persistent abdominal pain, cramping, chronic diarrhea (often with blood), unexplained weight loss, and fatigue, requiring long-term medical management.

8. Pancreatitis

Pancreatitis is inflammation of the pancreas. Acute pancreatitis causes sudden, severe pain in the upper abdomen that radiates to the back, accompanied by nausea, vomiting, and fever. Chronic pancreatitis leads to permanent damage, causing chronic abdominal pain and malabsorption.

9. Appendicitis

Appendicitis is an acute inflammation of the appendix, a small pouch attached to the large intestine. It typically begins as a dull ache around the navel that shifts to the lower right abdomen, becoming sharp and severe, accompanied by fever, nausea, and vomiting. This is a medical emergency.

10. Food Intolerances and Celiac Disease

Food intolerances (like lactose intolerance) and celiac disease (an autoimmune reaction to gluten) cause abdominal pain, bloating, gas, and diarrhea when specific foods are consumed, leading to malabsorption if left unmanaged.

11. Chronic Constipation

Hard, infrequent bowel movements can cause the colon to stretch, leading to dull, cramping pain throughout the abdomen, particularly in the lower left side, which resolves once bowel movements are restored.

12. Diverticulitis

Diverticulitis occurs when small pouches (diverticula) that can form in the walls of the large intestine become inflamed or infected. It typically causes constant, severe pain in the lower left abdomen, accompanied by fever, nausea, and a change in bowel habits.

Upper vs. Lower Abdominal Pain: How Location Helps Identify Causes

The location of your pain is one of the most important clues a doctor uses to narrow down the potential causes:

  • Upper Abdominal Pain: Pain in the upper region of the abdomen is frequently related to organs like the stomach, esophagus, duodenum, gallbladder, or pancreas. Common suspects include GERD, gastritis, peptic ulcers, gallstones, hiatal hernia, or pancreatitis.
  • Lower Abdominal Pain: Pain below the navel is often associated with the large intestine (colon), appendix, or pelvic organs. Potential causes include appendicitis (typically lower right), diverticulitis (typically lower left), Irritable Bowel Syndrome (IBS), inflammatory bowel disease (IBD), or chronic constipation.

While location is a helpful indicator, pain can sometimes be diffuse (spread out) or referred (felt in a different area than its actual source), making a professional physical exam necessary.

Specific Stomach Pain Scenarios and Symptoms

Evaluating how your pain behaves and what other symptoms accompany it provides vital clinical context:

Pain After Eating

Pain that develops shortly after meals is often linked to the upper digestive tract. Sharp pain in the upper right abdomen after eating fatty foods suggests gallstone issues. Burning pain that is relieved by food but returns a few hours later suggests a duodenal ulcer, while pain that worsens immediately after eating can indicate a gastric ulcer or chronic indigestion.

Pain with Vomiting or Diarrhea

Sudden abdominal pain accompanied by watery diarrhea, nausea, and vomiting is a classic sign of gastroenteritis (food poisoning or a stomach viral infection). However, if the vomiting is persistent, green or yellow (bilious), and you cannot pass gas or stools, it can indicate a serious bowel obstruction.

Pain with Bloating and Gas

Abdominal cramping accompanied by significant bloating, belching, and changes in stool consistency is frequently related to functional conditions like Irritable Bowel Syndrome (IBS), food intolerances, or small intestinal bacterial overgrowth (SIBO).

Pain with Blood in Stool

Passing bright red blood or black, sticky stools (melena) along with abdominal pain is a warning sign that should never be ignored. It indicates bleeding in the digestive tract, which can stem from bleeding ulcers, severe IBD flare-ups, colon polyps, or tumors, requiring prompt diagnostic evaluation.

Red Flags: When Is Abdominal Pain a Medical Emergency?

While most cases of stomach pain are not life-threatening, certain warning signs require immediate emergency medical care. Go to the nearest emergency department if you experience:

  • Severe, sudden, and unbearable abdominal pain.
  • High fever accompanied by severe pain and chills.
  • Vomiting blood or material that looks like dark coffee grounds.
  • Passing black, sticky stools or large amounts of blood from the rectum.
  • An abdomen that is rigid, hard to the touch, or extremely tender when pressed.
  • Jaundice (yellowing of the skin and the whites of the eyes).
  • Difficulty breathing, dizziness, or chest pain radiating to the jaw or arm.

How a Gastroenterologist Evaluates Abdominal Pain

If your stomach pain is chronic, recurring, or accompanied by warning signs, a gastroenterologist uses a systematic clinical approach to identify the cause:

  • Comprehensive Clinical History: The specialist will ask detailed questions about the pain's onset, location, severity, character (burning, cramping, sharp), triggers, and relieving factors, as well as your diet and medical history.
  • Physical Examination: The doctor will gently press on different areas of your abdomen (palpation) to check for tenderness, muscle guarding, organ enlargement, or abnormal masses.
  • Diagnostic Roadmap: Based on the findings, a personalized diagnostic plan will be discussed. Common tests include blood tests (LFT, CBC, amylase/lipase), stool tests, abdominal ultrasound, upper GI endoscopy, colonoscopy, or CT scans.

Role of Dr. Vikas Sengar: Stomach Pain Specialist in Kanpur

Finding a precise diagnosis and effective treatment for persistent stomach pain requires specialized medical care. Dr. Vikas Sengar, a leading gastroenterologist and stomach pain specialist in Kanpur, provides comprehensive evaluation and advanced care for complex digestive and hepatobiliary conditions.

With a DM in Gastroenterology from SGPGI Lucknow and over 10 years of clinical experience, Dr. Sengar is highly skilled in diagnosing and treating peptic ulcers, gallstone issues, pancreatitis, IBS, and inflammatory bowel diseases. Practicing at Medi Help Hospital, Sarvodaya Nagar, Kanpur, Dr. Sengar combines state-of-the-art diagnostic tools with a compassionate, patient-first approach to restore your digestive health.

Frequently Asked Questions (FAQs)

Q1: When should I see a doctor for stomach pain?
You should consult a doctor if your stomach pain is severe, lasts for more than a few days, wakes you up at night, worsens over time, or is accompanied by warning signs like fever, unexplained weight loss, difficulty swallowing, or blood in your stool.

Q2: Why does my stomach pain worsen when I am stressed?
The gut and brain are closely connected through the gut-brain axis. Stress triggers the release of hormones that make the nerves in your digestive tract more sensitive, increase stomach acid production, and alter bowel motility, which can worsen pain in conditions like IBS or gastritis.

Q3: Can an abdominal ultrasound detect all causes of stomach pain?
No. While an ultrasound is an excellent first-line test to visualize the liver, gallbladder (detecting gallstones), and kidneys, it cannot show the inner lining of the stomach or intestines in detail. Procedures like endoscopy or colonoscopy are required to diagnose conditions like gastritis, ulcers, or celiac disease.

Q4: Is stomach pain after eating always caused by indigestion?
No. While indigestion is common, persistent pain after eating can also indicate peptic ulcers, GERD, gallstones, or chronic pancreatitis, depending on the pain's character and timing. An evaluation by a gastroenterologist helps identify the exact cause.

Q5: What is the cost of a consultation with Dr. Vikas Sengar?
The consultation fee for Dr. Vikas Sengar at Medi Help Hospital, Kanpur is ₹800.

Conclusion

Stomach pain is a common and broad symptom with causes ranging from minor, self-limiting issues to chronic, serious conditions. Reclaiming your digestive comfort starts with avoiding self-diagnosis and getting a professional clinical evaluation. Book a consultation with Dr. Vikas Sengar for evaluation of digestive and liver-related concerns at Medi Help Hospital in Sarvodaya Nagar, Kanpur. To schedule your visit, call +91 98398 00199 or visit our online appointment booking portal.