I made a reasonable adjustments request to my employer to try and get more fixed hours instead of working shift work as doing very irregular hours is having a detrimental impact on my health and wellbeing. My employer has refused to do it dispite doing it for other colleagues. I've been told I can't as I don't have children So I shouldn't be asking for fixed working hours. I feel like I can't get into a good routine with my job and reslly feeling the struggle of it.
I think if you have been diagnosed and disclosed to your employer then they have to make reasonable adjustments I think there is a section on this website about it
It is a different matter to the one relating to flexible working hours for people with children and any employer should know this