go hot and cold
go hot and cold (all over)
To suddenly experience feelings of fear, anxiety, or unease, especially when they are triggered by a particular memory. I went hot and cold all over when I remembered how that dog lunged at me.
go hot and coldexperience sudden feelings of fear, embarrassment, or shock.
1973 Anthony Price October Men His wife had said…that she had gone ‘all hot and cold’ after nearly being run over.