Symptom Combination

Abdominal Pain and Diarrhea: Causes, Conditions & When to See a Doctor

Early recognition of Colitis (Ulcerative Colitis) is critical — treatment initiated at the earliest stage is significantly more effective and prevents long-term complications. Understanding the subtle initial presentations allows patients and clinicians to act before the condition progresses.

→ Abdominal Pain Overview → Diarrhea Overview

Possible Causes of Abdominal Pain and Diarrhea

Conditions that commonly cause both symptoms together

1Early Colitis (Ulcerative Colitis) often produces non-specific symptoms: fatigue, malaise, or mild discomfort
2Early warning signs may include: abdominal pain, diarrhea, rectal bleeding, fatigue
3Subclinical changes in blood tests, blood pressure, or weight often precede overt symptoms
4Family history and risk factors increase the probability that vague symptoms represent early Colitis (Ulcerative Colitis)
5Screening programmes are designed specifically to detect Colitis (Ulcerative Colitis) before symptoms appear
6Core management targets: reducing abdominal pain, diarrhea, rectal bleeding and preventing disease progression

Emergency Red Flags

Seek immediate medical attention if you experience any of these

Any of the characteristic symptoms of Colitis (Ulcerative Colitis) — even mild — in a high-risk individual

Progressive worsening of early warning signs over weeks

Laboratory abnormalities (e.g., blood sugar, inflammatory markers) without full symptoms

Unexplained weight loss, night sweats, or fatigue persisting >2 weeks

Strong family history of Colitis (Ulcerative Colitis) combined with new relevant symptoms

When to See a Doctor

Schedule a medical consultation if you notice these signs

You have risk factors for Colitis (Ulcerative Colitis) and develop any of the characteristic early symptoms

Screening tests return borderline or abnormal results

You have a strong family history and have not yet been screened for Colitis (Ulcerative Colitis)

Scheduled monitoring appointments — do not skip even when feeling well

Conditions That Cause Both Abdominal Pain and Diarrhea

22 conditions are associated with this symptom combination

Colitis (Ulcerative Colitis)

Ulcerative colitis is a chronic inflammatory bowel disease causing long-lasting inflammation and ulcers in the digestive tract, primarily affecting the colon and rectum. It leads to abdominal pain, diarrhea with blood, and urgency.

Endometriosis is a condition where tissue similar to the uterine lining grows outside the uterus. It causes chronic pelvic pain, especially during menstruation, and can lead to infertility. It affects approximately 10% of reproductive-age women.

Colorectal Cancer

Colorectal cancer develops in the colon or rectum and is the third most common cancer globally. Risk factors include age over 50, family history, inflammatory bowel disease, and diet high in red/processed meat.

Typhoid fever is caused by Salmonella typhi, transmitted through contaminated food and water, causing sustained fever, abdominal pain, and rose spots. Antibiotic treatment is effective; vaccination is recommended for travellers to endemic areas.

Norovirus (Stomach Flu)

Norovirus is the leading cause of acute gastroenteritis worldwide, spreading through contaminated food, water, and surfaces. It causes sudden-onset vomiting, diarrhea, and stomach cramps lasting 1-3 days; hydration is the mainstay of treatment.

Salmonellosis is a foodborne illness caused by Salmonella bacteria, typically from contaminated poultry, eggs, or raw produce. Symptoms include diarrhea, fever, and abdominal cramps beginning 6-48 hours after exposure; most resolve within a week.

Crohn's Disease

Crohn's disease is a chronic inflammatory bowel disease that can affect any part of the GI tract from mouth to anus, causing abdominal pain, diarrhea, and malnutrition. Skip lesions and transmural inflammation are pathological hallmarks.

Celiac disease is an autoimmune reaction to gluten that damages the small intestine villi, impairing nutrient absorption. Symptoms include diarrhea, bloating, weight loss, and fatigue; strict gluten-free diet is the only treatment.

Explore Individual Symptoms

In-depth pages for each symptom in this combination

Abdominal Pain — Full Overview Causes Treatment When to See a Doctor Related Questions

Diarrhea — Full Overview Causes Treatment When to See a Doctor Related Questions

Medical Questions About Abdominal Pain and Diarrhea

Evidence-based answers from medical experts

Early Signs of Colitis (Ulcerative Colitis)How to Manage Colitis (Ulcerative Colitis)Early Signs of Endometriosis How to Manage Endometriosis Early Signs of Colorectal Cancer How to Manage Colorectal Cancer Early Signs of Typhoid Fever How to Manage Typhoid Fever

Clinical Matches — Authority Pages

Condition-level differential and comparison resources for this combination

Differential analyses:

🔬Colon Polyps: differential →🔬Colitis (Ulcerative Colitis): differential →🔬Typhoid Fever: differential →

Condition comparisons:

⇄Diverticulitis vs Irritable Bowel Syndrome (IBS) →⇄Celiac Disease vs Crohn's Disease →

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