15 Warning Signs You Should See a Gastroenterologist (2026 Update)

Digestive symptoms are common. Occasional heartburn, gas, constipation, or stomach discomfort may improve with simple lifestyle changes. However, persistent, worsening, or concerning digestive symptoms can signal a condition that deserves evaluation by a gastroenterologist.

A gastroenterologist, also called a GI doctor, specializes in conditions affecting the digestive system, including the esophagus, stomach, small intestine, colon, rectum, liver, gallbladder, bile ducts, and pancreas. GI specialists perform procedures such as colonoscopy, upper endoscopy, ERCP, and endoscopic ultrasound when appropriate.

This guide explains when to see a gastroenterologist, which digestive symptoms should not be ignored, and when urgent care is needed.

Quick Navigation

• • • When digestive symptoms need attention
    • When to seek emergency care
    • 15 warning signs to see a gastroenterologist
    • Colonoscopy and colorectal cancer screening
    • What to expect at a GI appointment
    • Schedule a consultation

When Digestive Symptoms Need Attention

Some digestive symptoms are temporary and may follow a change in diet, a stomach virus, travel, stress, or a medication. It is time to consider seeing a GI doctor when symptoms:

• • • Continue for more than a few weeks
    • Keep returning or interfere with sleep, work, meals, or daily activities
    • Do not improve with initial treatment
    • Occur along with weight loss, bleeding, fever, vomiting, anemia, or trouble swallowing
    • Begin after age 45 or occur in someone with a family history of digestive cancers, inflammatory bowel disease, or other significant GI conditions

Early evaluation can identify treatable causes and help prevent complications.

Occasional vs. Concerning Digestive Symptoms

Occasional — monitor:

• • • Heartburn, gas, or stomach discomfort after a large meal
    • Symptoms that improve with simple lifestyle changes

Concerning — call a GI doctor:

• • • Symptoms that continue for more than a few weeks
    • Symptoms that keep returning or interfere with sleep, work, meals, or daily activities
    • Symptoms that do not improve with initial treatment
    • Symptoms that occur along with weight loss, bleeding, fever, vomiting, anemia, or trouble swallowing
    • Symptoms that begin after age 45 or occur in someone with a family history of digestive cancers, inflammatory bowel disease, or other significant GI conditions

When to Seek Emergency Care

Call 911 or seek emergency medical care for severe or sudden symptoms, including:

• • • Vomiting blood or material that looks like coffee grounds
    • Black, tarry stools or significant rectal bleeding
    • Severe or rapidly worsening abdominal pain
    • A rigid or markedly swollen abdomen
    • Fainting, confusion, chest pain, or shortness of breath with GI bleeding
    • Persistent vomiting with inability to keep fluids down
    • Yellowing of the skin or eyes with severe abdominal pain, fever, or confusion

These symptoms may indicate internal bleeding, bowel obstruction, severe infection, pancreatitis, or another urgent condition.

15 Warning Signs to See a Gastroenterologist

1. Frequent Heartburn, Acid Reflux, or GERD Symptoms

Heartburn is a burning sensation in the chest or throat that occurs when stomach contents flow backward into the esophagus. It is common, but frequent symptoms should not be ignored.

Consider a GI evaluation if you have:

• • • Heartburn or regurgitation more than twice weekly
    • Symptoms that persist despite over-the-counter treatment
    • Nighttime reflux that disrupts sleep
    • Chronic cough, hoarseness, throat clearing, or a sour taste in the mouth
    • Recurrent symptoms after stopping medication

A gastroenterologist can determine whether symptoms are related to gastroesophageal reflux disease (GERD), inflammation of the esophagus, a hiatal hernia, Barrett’s esophagus, or another condition.

Important: Heartburn with chest pressure, shortness of breath, sweating, or pain spreading to the jaw, shoulder, arm, or back may be cardiac rather than digestive. Seek emergency evaluation.

2. Difficulty Swallowing or Pain With Swallowing

Food feeling “stuck” in the throat or chest, trouble swallowing liquids, or pain when swallowing should be evaluated promptly.

Possible causes include:

• • • Esophageal narrowing or scar tissue
    • Severe reflux-related inflammation
    • Eosinophilic esophagitis
    • Esophageal motility disorders
    • Growths or cancer

Difficulty swallowing, called dysphagia, is an alarm symptom that may require an upper endoscopy to evaluate the esophagus and stomach.

3. Persistent Nausea or Vomiting

Nausea and vomiting may occur with a viral illness, medication effect, pregnancy, migraine, or food-related illness. However, persistent or recurrent vomiting needs medical evaluation.

See a GI doctor if you have:

• • • Vomiting that continues for several days
    • Recurrent unexplained nausea or vomiting
    • Trouble keeping down food or fluids
    • Vomiting associated with weight loss or dehydration
    • Vomiting blood or coffee-ground material
    • Vomiting with abdominal pain, bloating, or inability to pass stool or gas

Evaluation may include laboratory testing, imaging, upper endoscopy, or gastric-emptying testing, depending on the symptoms and clinical history.

4. Unexplained or Persistent Stomach Pain

Abdominal pain can arise from many organs and conditions. The location, timing, severity, triggers, and associated symptoms help guide the evaluation.

Schedule an appointment when stomach pain is:

• • • Persistent or recurrent
    • Severe enough to limit normal activity
    • Associated with fever, vomiting, bowel changes, or bloating
    • Related to meals or worsened by eating
    • Associated with unintentional weight loss
    • New or different from your usual symptoms

Upper abdominal pain may be related to acid reflux, ulcers, gallbladder disease, pancreas conditions, or liver disease. Lower abdominal pain may be related to constipation, diverticular disease, inflammatory bowel disease, irritable bowel syndrome, or other colon conditions.

5. Ongoing Bloating, Excessive Gas, or Abdominal Distention

Bloating is common, especially after certain foods, but persistent bloating or visible abdominal swelling should be discussed with a GI doctor.

Potential causes include:

• • • Constipation
    • Food intolerances
    • Celiac disease
    • Small intestinal bacterial overgrowth
    • Irritable bowel syndrome
    • Gastroparesis
    • Inflammatory bowel disease
    • Ovarian or other abdominal conditions

Pay particular attention to bloating that is new, progressive, painful, or accompanied by vomiting, weight loss, changes in bowel habits, or early fullness after small meals.

6. Chronic Constipation or a New Change in Bowel Habits

Constipation generally means infrequent bowel movements, hard stools, straining, a feeling of incomplete evacuation, or a need to use manual maneuvers to pass stool.

A GI evaluation may be appropriate when constipation:

• • • Lasts more than a few weeks
    • Does not improve with hydration, dietary changes, activity, or recommended treatment
    • Is new after age 45
    • Is associated with abdominal pain, vomiting, rectal bleeding, anemia, or unexplained weight loss
    • Occurs with a family history of colon cancer or inflammatory bowel disease

A sudden change in stool frequency or stool caliber can also warrant evaluation, especially when persistent.

7. Chronic Diarrhea

Diarrhea lasting more than four weeks is considered chronic and should be evaluated. Chronic diarrhea may lead to dehydration, nutrient deficiencies, fatigue, and unintended weight loss.

Possible causes include:

• • • Irritable bowel syndrome with diarrhea
    • Celiac disease
    • Inflammatory bowel disease
    • Microscopic colitis
    • Medication effects
    • Chronic infection
    • Bile acid diarrhea
    • Pancreatic disorders
    • Food intolerance or malabsorption

Contact a GI doctor sooner if diarrhea occurs with blood, black stools, fever, nighttime symptoms, dehydration, anemia, weight loss, or severe abdominal pain.

8. Blood in Your Stool, Black Stools, or Rectal Bleeding

Never assume rectal bleeding is “just hemorrhoids.” Bright-red blood may come from hemorrhoids or anal fissures, but it can also be caused by polyps, inflammation, diverticular bleeding, or colorectal cancer.

Black, sticky, tar-like stools can be a sign of bleeding higher in the digestive tract and should be assessed urgently.

See a gastroenterologist for any unexplained rectal bleeding, especially if it is recurrent or associated with:

• • • Abdominal pain
    • Change in bowel habits
    • Fatigue or anemia
    • Weight loss
    • A family history of colon cancer or polyps

9. Unexplained Weight Loss or Loss of Appetite

Losing weight without trying may indicate a digestive, hormonal, metabolic, inflammatory, or other medical issue. A decreased appetite or feeling full after only a small amount of food can also be concerning when persistent.

A GI evaluation is important when unintended weight loss occurs with:

• • • Ongoing stomach pain
    • Trouble swallowing
    • Nausea or vomiting
    • Diarrhea or constipation
    • Blood in the stool
    • Fatigue or anemia
    • A new abdominal mass or swelling

The cause may be benign and treatable, but these symptoms should not be delayed.

10. Iron-Deficiency Anemia or Ongoing Fatigue

Iron-deficiency anemia occurs when the body does not have enough iron to make healthy red blood cells. It can cause fatigue, weakness, dizziness, shortness of breath, headaches, or paleness.

In adults, iron-deficiency anemia may result from blood loss within the digestive tract, even when there is no visible bleeding. A gastroenterologist may recommend upper endoscopy, colonoscopy, or other testing based on age, medical history, and laboratory findings.

11. Jaundice, Abnormal Liver Tests, or Symptoms of Liver Disease

Jaundice is yellowing of the skin or eyes. It may be caused by a liver condition, bile-duct blockage, gallstones, pancreatitis, medication effect, or another condition affecting bilirubin processing.

Other symptoms that need evaluation include:

• • • Dark urine
    • Pale or clay-colored stools
    • Persistent itching
    • Abdominal swelling
    • Leg swelling
    • Easy bruising
    • Confusion or changes in alertness
    • Abnormal liver enzyme results

A gastroenterologist can evaluate liver, gallbladder, pancreas, and bile-duct disorders and coordinate appropriate testing and treatment.

12. Gallbladder Symptoms or Recurrent Upper-Right Abdominal Pain

Gallstones and gallbladder disease may cause pain in the upper-right or upper-middle abdomen, often after meals. Pain may spread to the back or right shoulder and may be accompanied by nausea or vomiting.

Contact a GI doctor if you experience recurring episodes of upper abdominal pain, particularly after fatty meals. Seek urgent care for severe pain with fever, jaundice, persistent vomiting, or dark urine, as these symptoms can indicate a blocked bile duct or infection.

13. Recurrent Pancreatitis or Unexplained Pancreatic Symptoms

The pancreas makes digestive enzymes and hormones that help regulate blood sugar. Pancreatitis is inflammation of the pancreas and can cause significant upper abdominal pain that may radiate to the back, nausea, vomiting, and poor appetite.

A gastroenterologist should evaluate recurrent pancreatitis, unexplained pancreatic enzyme elevations, pancreatic cysts, or concerning imaging findings. Advanced testing, including endoscopic ultrasound or ERCP, may be appropriate in selected cases.

14. Symptoms of Inflammatory Bowel Disease

Inflammatory bowel disease, or IBD, includes Crohn’s disease and ulcerative colitis. These are chronic immune-mediated conditions that can cause inflammation in the digestive tract.

Symptoms that warrant GI evaluation include:

• • • Persistent diarrhea
    • Blood or mucus in the stool
    • Abdominal cramping or pain
    • Unintended weight loss
    • Fatigue
    • Fever
    • Urgent bowel movements
    • Symptoms that wake you from sleep
    • Recurrent anal pain, drainage, or abscesses

Early diagnosis and treatment can help control inflammation and reduce the risk of complications.

IBS vs. IBD

Irritable bowel syndrome (IBS):

• • • Can cause bloating, abdominal pain, and chronic diarrhea

Inflammatory bowel disease (IBD) — Crohn’s disease and ulcerative colitis:

• • • Chronic immune-mediated inflammation of the digestive tract
    • Can cause persistent diarrhea, blood or mucus in the stool, abdominal pain, unintended weight loss, fever, and nighttime symptoms

Only a medical evaluation can diagnose the cause of your symptoms.

15. You Are Due for Colorectal Cancer Screening

Colorectal cancer often develops from precancerous polyps that may not cause symptoms. Screening can find and remove polyps before they become cancer.

For many adults at average risk, colorectal cancer screening should begin at age 45. Colonoscopy is a highly effective screening option because it can detect and remove polyps during the same procedure.

You may need screening earlier or more frequently if you have:

• • • A parent, sibling, or child with colorectal cancer or advanced polyps
    • A personal history of colon polyps or colorectal cancer
    • Inflammatory bowel disease involving the colon
    • A known hereditary cancer syndrome
    • Symptoms such as rectal bleeding, unexplained anemia, or persistent bowel changes

Your GI doctor can recommend the screening test and interval that best fit your individual risk.

Average-risk colon cancer screening begins at age 45. Family history or high-risk conditions may require earlier screening.

What to Expect at a Gastroenterology Appointment

Your GI visit begins with a detailed discussion of your symptoms, health history, medications, family history, diet, and prior tests or procedures. Depending on your symptoms, your gastroenterologist may recommend:

• • • Blood work or stool testing
    • Abdominal ultrasound, CT scan, MRI, or other imaging
    • Upper endoscopy to evaluate the esophagus, stomach, and first part of the small intestine
    • Colonoscopy to evaluate the colon and rectum
    • Evaluation of the liver, gallbladder, bile ducts, or pancreas
    • Nutrition and lifestyle recommendations
    • Medication treatment or follow-up monitoring

Bring a list of medications and supplements, prior test results if available, and details about when your symptoms started and what makes them better or worse.

Your Visit in Four Steps

• • 1. Consultation: Your gastroenterologist will ask about your symptoms, medical history, and lifestyle and review your recent test results.
    2. Testing: Diagnostic testing may include blood tests, stool tests, breath tests, imaging, endoscopy, or colonoscopy, depending on your symptoms and medical history.
    3. Diagnosis: Your gastroenterologist will review your test results to identify the cause of your symptoms.
    4. Personalized Treatment Plan: You and your gastroenterologist will work together to design a treatment plan that addresses the cause of your symptoms and takes your lifestyle and preferences into account.

Do Not Ignore Persistent Digestive Symptoms

Many GI conditions are manageable, and some are preventable when identified early. If you have persistent stomach pain, acid reflux, GERD symptoms, bowel changes, rectal bleeding, unexplained weight loss, or are due for a colonoscopy, a gastroenterology consultation can help provide answers and an individualized plan.

Schedule a Gastroenterology Consultation

At Gastro in Florida, Dr. Vikram Tarugu provides comprehensive digestive care, including colon cancer screening, colonoscopy, upper endoscopy, liver and pancreas evaluation, and advanced therapeutic endoscopy.

Call Gastro in Florida at (863) 824-3447 (Okeechobee) or (561) 767-8342 (Wellington), or book a televisit.

Frequently Asked Questions

What is the difference between a primary care doctor and a gastroenterologist?

A primary care physician can evaluate many common digestive concerns and coordinate initial testing. A gastroenterologist has advanced training in diagnosing and treating digestive, liver, pancreas, gallbladder, and colon conditions and can perform specialized procedures such as colonoscopy and upper endoscopy.

Should I see a GI doctor for heartburn?

Occasional heartburn may improve with lifestyle changes or short-term treatment. See a GI doctor if symptoms happen frequently, persist despite treatment, disrupt sleep, or occur with trouble swallowing, weight loss, bleeding, vomiting, anemia, or chest symptoms.

When should I get a colonoscopy?

Many adults at average risk should begin colorectal cancer screening at age 45. Earlier screening may be recommended for people with a family history of colorectal cancer or advanced polyps, inflammatory bowel disease, personal history of polyps, or hereditary cancer risk.

Is blood in the stool always caused by hemorrhoids?

No. Hemorrhoids are a common cause of rectal bleeding, but blood in the stool can also be caused by fissures, inflammation, polyps, diverticular disease, or colorectal cancer. Recurrent or unexplained bleeding should be evaluated.

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