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Irritable Bowel Syndrome Constipation
At GastroDoxs in Houston, Dr. Nghia Nguyen offers personalized, individualized care for irritable bowel syndrome with constipation (IBS-C). Using lifestyle guidance, dietary support, and advanced therapies—including prescription medications and biofeedback—he helps reduce pain, bloating, and constipation for lasting digestive relief.
Dr. Nghia Nguyen, DO, is a board-certified gastroenterologist providing advanced digestive care in the Greater Houston area. He earned his medical degree from the Texas College of Osteopathic Medicine and completed both his Internal Medicine residency and Gastroenterology fellowship at the University of Texas at Rio Grande Valley. Dr. Nguyen specializes in treating conditions such as acid reflux, irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and liver disorders.
Common Causes and Risk Factors
Altered gut-brain signaling leading to increased nerve sensitivity
Slow transit of stool through the colon
Family history of IBS
Chronic stress or anxiety
Diets low in fiber or high in fat
Use of certain medications (e.g., opioid pain relievers, some antidepressants)
Signs and Symptoms
Fewer than three bowel movements per week
Hard, dry, or lumpy stools
Abdominal cramping or pressure
Temporary relief of pain after a bowel movement
Bloating, gas, and a feeling of fullness
How Dr. Nghia Nguyen Diagnoses This Condition?
Dr. Nguyen uses a step-by-step approach:
Medical History and Physical Exam
He reviews your health history, stress levels, diet, bowel-movement patterns, epigastric pain episodes, and any “red-flag” symptoms such as bleeding or unintended weight loss.
Symptom Checklists
We apply the Rome IV criteria to confirm recurrent abdominal pain linked to altered stool frequency or form, and to distinguish IBS-C from other GI disorders.
Laboratory Tests
Blood work to exclude anemia, thyroid dysfunction, celiac disease or inflammatory markers.
Stool studies to rule out infections, parasites or occult blood.
Endoscopic and Imaging Studies (if needed)
For patients over 50 or those with alarm features, Dr. Nguyen may recommend colonoscopy or upper endoscopy. Abdominal ultrasound or CT can also be used to exclude structural issues.
Treatment
Our Team offers a full range of care for Irritable Bowel Syndrome with Constipation (IBS-C)
1. Lifestyle and Diet Support
Gradual increase in dietary fiber to normalize bowel movements
Adequate hydration—drink plenty of water daily
Consistent meal timing to improve gut rhythm
Regular low-impact exercise such as walking or swimming
Stress-reduction techniques: deep breathing, yoga, counseling
2. Medications
Fiber-based supplements to ease stool passage
Osmotic laxatives that draw water into the colon
Prescription agents (linaclotide or plecanatide) to stimulate bowel movements
Low-dose antidepressants to modulate gut nerve signals and reduce pain
3. Advanced Therapies
Biofeedback therapy to train pelvic-floor muscle coordination
Nerve-stimulation devices for improved colon function (in selected cases)
Dr. Nghia Nguyen, DO, is a board-certified gastroenterologist providing advanced digestive care in the Greater Houston area. He earned his medical degree from the Texas College of Osteopathic Medicine and completed both his Internal Medicine residency and Gastroenterology fellowship at the University of Texas at Rio Grande Valley. Dr. Nguyen specializes in treating conditions such as acid reflux, irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and liver disorders.
Frequently Asked Questions
What is the difference between IBS-C and regular constipation?
Regular constipation is short-term and often caused by diet or changes in routine. IBS-C includes chronic belly pain, gas, bloating, and a long-term pattern of gut dysfunction.
How long does it take to feel better?
Most people notice some improvement within two to four weeks of lifestyle and dietary changes. Prescription medications may take a bit longer—usually four to six weeks—to reach full effect.
Can stress make IBS-C worse?
Yes. Stress and anxiety can disrupt the normal communication between your brain and gut, leading to more frequent or severe IBS-C flares.
Are laxatives safe to use?
Certain types—like fiber supplements and osmotic laxatives—are safe when used as directed. Dr. Nguyen will recommend the best option for your needs and help you avoid overuse.
Will I need a colonoscopy?
Not everyone requires one. Dr. Nguyen advises colonoscopy only for patients over age fifty or those with “red flag” symptoms such as unexplained weight loss, bleeding, or anemia.
What foods should I avoid?
Common IBS-C triggers include dairy, wheat, onions, beans, and high-fat foods. Keeping a food diary or working with a dietitian can help you identify your personal triggers.
What does the ICD-10 code K58.1 mean?
K58.1 is the official insurance and medical record code for irritable bowel syndrome with constipation, ensuring accurate documentation and billing.
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