What are the symptoms of IBS?
The main symptoms of IBS are recurring abdominal pain or cramping, usually in the lower belly, that is related to bowel movements, along with a change in how often you go or what your stool looks like. Other common IBS symptoms include bloating, a swollen-feeling belly, gas, constipation, diarrhea or alternating between them, urgency, mucus in the stool and a feeling of incomplete emptying. Symptoms often come and go and may flare with stress or certain foods.
- Abdominal pain or cramping linked to bowel movements
- Bloating and a swollen-feeling belly
- Constipation, diarrhea, or both at different times
- Urgency or a feeling of incomplete emptying
- Mucus in the stool
- Symptoms that come and go over months
What do IBS symptoms feel like day to day?
Many people with IBS describe crampy lower belly pain that eases or changes after a bowel movement, bloating that builds through the day, and unpredictable bowel habits, such as several urgent loose stools one morning and days of constipation later in the week. Symptoms often worsen after meals, during stress or around menstrual periods, and can affect work, travel and social plans.
Core features of IBS
- PainRecurring abdominal pain at least one day a week, linked to bowel movements.
- Bowel changeChanges in how often you go or in stool appearance.
- DurationSymptoms for at least three months, starting at least six months ago.
Have symptoms like these?
Dr. Muhammad Ali Khan, a board-certified gastroenterologist and hepatologist, sees adults at our Katy and Cypress offices, serving patients across Greater Houston.
Why see a gastroenterologist for IBS?
A gastroenterologist can confirm that your symptoms fit IBS and rule out conditions that look similar, such as celiac disease, inflammatory bowel disease, microscopic colitis, bile acid diarrhea, small intestinal bacterial overgrowth and colon cancer. They can then match treatment to your IBS type with diet strategies, prescription medicines, pelvic floor therapy when needed and gut-directed therapies, and adjust the plan over time.
| Condition | Clues that raise suspicion | Typical test |
|---|---|---|
| Celiac disease | Diarrhea, bloating, anemia, family history | Blood test, small bowel biopsy |
| Inflammatory bowel disease | Blood, weight loss, night-time diarrhea | Stool calprotectin, colonoscopy |
| Microscopic colitis | Watery diarrhea, older age | Colonoscopy with biopsies |
| SIBO | Bloating soon after meals, prior surgery | Breath test |
| Colon cancer | New symptoms after 45, bleeding, anemia | Colonoscopy |
When should I see a doctor for IBS symptoms?
See a doctor if IBS-like symptoms last more than a few weeks, keep coming back, or interfere with your life, and get prompt care for rectal bleeding, black stools, unexplained weight loss, anemia, fever, symptoms that wake you at night, or new symptoms after age 45. A family history of colon cancer, celiac disease or inflammatory bowel disease is another reason to be evaluated.
See a doctor promptly for
- Rectal bleeding or black stools
- Unexplained weight loss, anemia or fever
- Symptoms that wake you from sleep
- New symptoms after age 45
What happens at an IBS appointment?
At an IBS appointment, Dr. Khan reviews your symptoms, bowel habits, diet, stress, medicines and family history, and examines you. Depending on your pattern, he may order blood tests, stool tests for inflammation and infection, celiac testing, breath tests, or a colonoscopy if warning signs are present or screening is due. You leave with a plan matched to your IBS type and a follow-up to fine-tune it.
Tip: Bring a symptom diary
Record pain, bowel movements, stool form, food, stress and periods for two weeks before your visit. It is one of the most useful tools for diagnosing and treating IBS.
Learn more about IBS care in Katy and Cypress, how to tell if you have IBS and IBS treatment options.
Get answers instead of guessing
Request a visit with Dr. Muhammad Ali Khan at our Katy and Cypress offices. Most major insurance plans are accepted and self-pay options are available.
Key takeaways
- IBS symptoms center on recurring abdominal pain linked to bowel movements and changes in stool.
- Bloating, gas, urgency and alternating constipation and diarrhea are common.
- A gastroenterologist rules out look-alike conditions and tailors treatment to your IBS type.
- Bleeding, weight loss, anemia or night-time symptoms need prompt evaluation.
- A symptom diary speeds diagnosis and treatment.
Frequently asked questions
What are the first signs of IBS?
Often recurring cramping abdominal pain with changes in bowel habits and bloating, which may come and go over weeks to months.
Can IBS cause back pain or fatigue?
Some people with IBS report back pain, fatigue and poor sleep, though these are not used to diagnose IBS.
Do I need a colonoscopy for IBS?
Not always. Colonoscopy is recommended for warning signs, age-based screening or when diarrhea suggests other conditions.
Can IBS symptoms change over time?
Yes. Some people shift between constipation-predominant and diarrhea-predominant patterns over time.
Do I need a referral to see a gastroenterologist in Katy or Cypress?
It depends on your insurance plan. Many PPO plans let you book a specialist directly, while some HMO plans require a referral from your primary care doctor. Call (346) 340-4414 and the team can help you check.
Sources
- NIDDK — Irritable bowel syndrome
- NIDDK — Symptoms and causes of IBS
- MedlinePlus — Irritable bowel syndrome
- American College of Gastroenterology — IBS
- NIDDK — Celiac disease
Where to be seen in Katy and Cypress
United Gastroenterology Associates has two offices: Katy, at 23920 Katy Freeway, Suite 555, next to Memorial Hermann Katy Hospital, and Cypress, at 21216 Northwest Freeway, Suite 640, on US-290. Both are open Monday through Friday, 8:30 AM to 5:00 PM, closed for lunch from 12:00 to 1:30 PM, and serve patients from Fulshear, Richmond and across Greater Houston. Call (346) 340-4414 for either office.
Katy office
23920 Katy Freeway, Suite 555
Katy, TX 77494
Memorial Hermann Medical Plaza 1
Next steps
If you are dealing with ibs symptoms or any ongoing digestive concern, a focused evaluation can find the cause and start the right treatment. Dr. Muhammad Ali Khan and the team at United Gastroenterology Associates see adults from Katy, Cypress, Fulshear, Richmond, Greater Houston and across Texas. Call (346) 340-4414 or request an appointment today.
If you have severe pain, vomit blood, pass black stools or have chest pain, call 911 or go to the nearest emergency room.



