Screening of Lactose Intolerance Among IBS Patients Diarrhea Dominant

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.

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:

• Related to defecation (pain improves or worsens with bowel movements).
• Change in stool frequency (diarrhea or constipation).
• 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