It could be heat rash or a number of other things. See if it persists and if so see a GP.

Yes, my eczema always got worse in the winter. Always good to have eczema or rashes checked with the doctor.

In short.., yes. Personally I find the colder the months the more irritated as I rug up and feel really cold my body actually overheats. Not to mention the constant heat pump that dries everything out.

If bub has a rash best to just get the GP or child health nurse to have a look, depending on age could also be a food intolerance.

yeah possibly but i agree with heidi about getting it checked by a professional.

Could be either. I would take bub to the Dr or pharmacist