Table 2

 Conditions associated with acquired carbohydrate malabsorption

Post-enteritis syndromePossible after any enteric infection
    Giardia lamblia
    Salmonella species
    Campylobacter species
Type IV hypersensitivity syndromesThis mechanism of epithelial damage underlies the post-enteritis syndrome, which may be complicated with protein sensitisation, i.e. CMSE
Coeliac disease
Cow’s milk sensitive enteropathy (CMSE)
Autoimmune enteropathy
Graft versus host disease
Host versus graft (small bowel allograft rejection)
Primary carbohydrate maldigestionMilder forms of single gene defects may be unrecognised even through to adult life (more common with sucrase isomaltase and lactose intolerance)
• Lactose intolerance (2 q21)
• Glucose-galactose malabsorption (22 q13)
• Sucrase-isomaltase deficiency (3q 25–26)