The warnings on Abilify caution you to avoid direct sunlight. Seriously.
So what happens when you fail to take your meds into account and spend an afternoon in the sun without sunblock, which would be a bad idea anyway because you inherited the pasty skin of your Irish ancestors? What happens is that you wind up with a sunburn that flakes for weeks afterwards.
Strangely enough, my sunburn wasn't bad enough to hurt. My skin just stayed really red for almost a week. Three weeks later, my skin is still flaking slightly. In pre-lamictal/abilify days, this whole process would have taken about a week.
So, kids, if you're on either of these meds, and all the more so on both, wear that sunblock.