I've got a painful condition that is worse at some times and more manageable at others. It's included as a disability under the Equality Act. Yesterday I was in pain all day and after work took my painkillers. I try not to take them unless I really have to as they make me a bit spaced out which I don't like. They also don't do enough for the pain but nothing does and this has been going on for many years so I've tried all sorts of alternatives. Last night I barely slept due to the pain waking me up through the night so today I'm exhausted and still in pain. Only thing that's stopping me taking a sick day is my DD also has same condition (hereditary) and has a hospital appointment today which I'm taking her too (work were fine with me fitting my hours around this today). I really don't want to rearrange that as it'll take a long time to get another appointment and it's getting urgent that she's seen. So AIBU to take the day off to rest but still take her to the appointment?