Screening of Lactose Intolerance Among IBS Patients Diarrhea Dominant

Screening for Lactose Intolerance Among Patients With IBS Diarrhea Dominant

Status

Not yet recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT06931379

Enrollment

Registered

2025-04-17

Start date

2026-01-31

Completion date

2027-02-28

Last updated

2026-01-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lactose Intolerance

Keywords

lactose intolerance, chronic diarrhea

Brief summary

This cross-sectional study aims to determine the prevalence of lactose intolerance among patients with chronic diarrhea, assess its correlation with age and gender, and evaluate common symptoms in affected patients. The study will collect demographic data, conduct lactose intolerance testing via PCR, and use a symptom questionnaire.

Detailed description

The study is designed as a cross-sectional analysis conducted at a single healthcare center. Its primary objectives are: To determine the point prevalence of lactose intolerance in patients suffering from chronic diarrhea (lasting more than four weeks). To explore potential correlations between lactose intolerance and demographic factors such as age and gender. To identify the most common symptoms associated with lactose intolerance in this patient population. Methodology: Data Collection: Demographic information (age, sex, medical history, and diarrhea duration) will be gathered. Lactose Intolerance Testing: Polymerase Chain Reaction (PCR) will be employed to diagnose lactose intolerance. Symptom Questionnaire: A standardized questionnaire will be administered to document symptoms like abdominal pain, bloating, flatulence, diarrhea, and nausea.

Interventions

None listed

Study design

Observational model

OTHER

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to 70 Years

Healthy volunteers

Inclusion criteria

* All Patients with IBS diarrhea dominant type meet Rome criteria attending at Al-Rajhy University Hospital during 6 months (from march to September). A patient must have recurrent abdominal pain (at least 1 day per week in the last 3 months) associated with at least two of the following: 1. Related to defecation (pain improves or worsens with bowel movements). 2. Change in stool frequency (diarrhea or constipation). 3. Change in stool form (appearance) (loose, watery, hard, or lumpy). * Patients aged \>18 years. * Both males and females

Exclusion criteria

* -patient aged\<18 years old. * Patients with chronic diarrhea don't meet Rome criteria * patients with malignancies

Design outcomes

Primary

Measure	Time frame	Description
Prevalence data on lactose intolerance in patients with IBS diarrhea dominant.	1 year	The primary outcome is to determine the percentage of patients with chronic diarrhea who test positive for lactose intolerance using PCR testing.

Outcome results