Table 1

Epidemiological overlap between inflammatory bowel disease (IBD) and other diseases

DiseaseAltered prevalence in IBDRef
AsthmaIncreased10 13
Ankylosing spondylitisIncreased11 14 15
Atopic dermatitisIncreased16 17
PsoriasisIncreased10 13 18
Primary sclerosing cholangitisIncreased19
Multiple sclerosisIncreased12
Rheumatoid arthritisPossibly increased11 13
Systemic lupus erythematosusUnclear from present data20
SarcoidosisUnclear from present data21
Coeliac diseaseProbably no change22
Type 1 diabetes mellitusNo change11 13 23
Type 2 diabetes mellitusNo dataNA