Considering situations where an individual academic track record is to be evaluated - whether by grant panel, job interview panel, promotion panel etc.
If the individual were to make a statement along the lines of
Prior to [date] I was suffering from an undiagnosed long term health condition which did not result in absence from work, but limited my output. This was both diagnosed and treated from [date] after which my productivity increased substantially, as can be demonstrated by XYZ.
Is this likely to be viewed favorably in evaluating the applicant's potential to deliver on the future grant/job/etc? Or is there a risk it could be viewed with suspicion given the applicant was still employed between those dates and the employer unaware of the situation?
Suppose it were a mental health disorder, would it be better to say so, or keep with the more generic description above?
Would the answer differ depending on which of the situations (job application, grant application) we're talking about?