oops i think i'm seeing the issue and it is indeed my error somehow i missed that the epidemiology section had a second section regarding comorbidity in it i have struck my comment above and in the future i won't mention it again unless it's relevant to acknolwedge my previous error my apologies i would argue however that incidence which relates to new appearances of did in the community at large isn't a good subheading because the section includes a discussion of both incidence and prevalence i suggest using a subheading with both incidence and prevalence though another option is simply leaving it as epidemiology the wp medmos diseases or disorders or syndromes doesn't give much guiance here bar noting that epidemiology should include incidence and prevalence information no mention of subsections usually you leave it as a single larger section until it gets sufficiently lengthy that it makes sense to split them out which is itself dependent on the sources i've replaced the section heading but both i and p the section overall needs fleshing out with more sources which i think are unfortunately lacking searching on pubmed for did and both incidence and prevalence turns up no articles specifically focussed on either topic t c wikipedia's rules simple complex again my apologies for the error the fault was completely mine