Long story short, I'm halfway through my PhD and have recently started receiving help for invisible disabilities from the university, although I have not disclosed the details of these disabilities to my supervisors. My supervisors know that I receive university support for 'medical issues' but they do not know specifically what these are.
A recent discussion with my supervisors lead to them saying they cannot support my request for accommodations or advocate on my behalf without knowing exactly what 'medical issues' I have. I have no problem disclosing specific situations I sruggle with (e.g. that I can be distracted easily, that I often misunderstand people etc), but do not want to put a label on the actual diagnoses as it does not describe how these disabilities affect me specifically and there can be a lot of misunderstanding around these diagnoses.
So my question is, do you think it is fair for me to not disclose my exact disabilities to my supervisors but request their support for accommodating my 'medical issues' and impairments?
As an aside, as per university policy I am not required to disclose to anyone except our disabilities branch (which I have done), through which we can request accommodations, support, and advocacy without needing to disclose to other university staff (lecturers, professors, supervisors) our disabilities (for example, someone who is visually impaired can request audio recordings on medical grounds without being obligated to tell the lecturer the reason for the request i.e. being visually impaired).