I'll say one thing about ice packs.
I never use them directly against my skin, (I use a towel),
But,
For swelling, like my feets, it works well.
Ice packs are commonly used to fight swelling.

And, another Important point,
Headaches.
With Migraine pain, it's imperative to get some cold packs around the head!

Ice is not the demon some are making it out to be.

It merely needs to be used judiciously.
IMHO.

pete
Asb