The following diagnoses were also made: IBS (100/137, 73%), functional dyspepsia (62/137, 45%), organic dyspepsia (33/137, 24%), and lactose intolerance (75/137, 55%).
[ncbi.nlm.nih.gov]
Many patients with IBS also have functional dyspepsia.
[ncbi.nlm.nih.gov]
(FD: functional dyspepsia; OD: organic dyspepsia).
[doi.org]