This is not so much a howto, as a “you may run into this”. A lot of people have headaches related to plurality things. We do, sometimes. We’ve found over time that the quantity of them has gone down, but not the quality: if one happens, it’s time for some ibuprofen and a quiet, dark place to rest.
If you have a lot of headaches, you probably better ask your doctor. But it’s worth mentioning that plurality does seem to cause them for some.