I am having a new treatment for a chronic neurological condition. It’s two IV infusions 15 days apart, then 6 monthly after that. The first infusion fell on my days off. I told my manager that I’d need the day of the second infusion off. But apparently I either have to swap a shift or take it as annual leave. I can’t have it as sick leave as I’m not technically sick. (She is fully aware of the diagnosis!) I work in the NHS. Is this correct? I feel slightly aggrieved at having to use annual leave for something I have no choice over! And my sickness record is very good!