Recurrent abdominal pain or cramping
Pain related to bowel movements
Change in stool frequency
Change in stool form or appearance
Diarrhea, constipation, or alternating between both
Bloating or abdominal swelling
Mucus in the stool
Feeling of incomplete bowel emptying
Symptoms lasting at least 3 months
Symptoms that started at least 6 months ago
Symptoms triggered or worsened by stress or certain foods
No fever, weight loss, blood in stool, or nighttime symptoms
Medical evaluation to rule out other causes
Diagnosis based on symptom pattern and history