PN can also mimic swollen feeling in feet/toes without apparent swelling.
I have this constantly. My feet also burn and are at the same time cold,
or alternately hot & cold causing me to shift my feet from under the covers, to outside the covers when trying to sleep- or waking to have to shift feet from under, or out of the covers. Many times I have to use 'Icy Hot' (or generic) to help - when burning symptom occurs.