I don't often get hiccups, and they weren't high on the list of possible chemotherapy side effects, but it turns out that at least three of the drugs I'm taking (5-fluorouracil, irinotecan, and the antinauseant dexamethasone) can cause them.
And I've got 'em. They aren't nasty or continuous, but they have come and gone all day, along with a bit more of that runny nose. I'm hoping they'll go away once I get the chemo bottle removed tomorrow afternoon. But as side effects go, the hiccups are mild for me, and I certainly prefer them to most of the alternatives.