Yes but for me I don't think it's the Meds. I was just telling my therapist I don't get enough sleep in the summer because as soon as the sun rises I am up with it and in the winter I might as well be a hibernating bear. I am sensitive to the sun to sounds ( can't stand tv) to bright colors strong smells and it seems to get worse as I age. I am only bipolar 2 though.
I know someone from my bipolar support group who ends up in the hospital every summer for a manic episode.