My 1 year old grandson was sitting in his High chair when his mom noticed his feet were cold and purplish then she noticed his hands were the same way they live in the Midwest and their temp outside is 10 but the home is warm at 72 degreaser his mom put sock on his hands and feet they did not warm up after a 1/2 hrs of being covered What could be causing this he is a healthy child this is just a all of a sudden thing