HI, thanks for using healthcare
The shaking or chills
that your husband experienced can occur in fever
due to the body resetting its internal thermostat. During these chills , even though he feels cold
, it would be best to avoid the use of a blanket or any warming agents which would further increase the temperature.
YOu can give him paracetamol
to help reduce the fever, as well as cool liquids. He may also want to take a bath to help lower the temperature using tepid water.
If he is a known diabetic then it may be best to take him to see his doctor.
I hope this helps