My toddler is having this. The poos are of a decent/softish (but not runny) consistency, and absolutely agonising from the look of it.
Most of them are small/smears, but with a decent size poo one of twice a day. In all, this is happening 15+ times a day.
She has other health problems, but nothing that should be causing this (though sure did have recurring c diff until recently). The hospital are aware and if some extra fluids don't work they'll take a look, but are initially stumped for an answer.
So on the offchance anyone else has come across this, I thought I'd ask.