Small Intestinal Bacterial Overgrowth(SIBO) is a common condition associated with many symptoms and diseases, including:
 
Bloating (especially after meals)
Gas
Diarrhoea
Constipation
Abdominal pain
Indigestion
Irritable Bowel Syndrome (IBS)
Inflammatory Bowel Disease (IBD)
Coeliac Disease
Diabetes
Fibromyalgia
Rosacea
Parkinson's Disease
Obesity