Yes, we have gone through it with my step daughter who then gave it to the baby. This was probably almost a year ago, but it was miserable. The blisters were very painful for him, and he had fever for 2 days as well.
Gabriel blistered mostly around his mouth and on his butt, though he did have some blistering on his hands.
And, just so you are aware, it is not uncommon for kids to lose fingernails and toenails after a bout of this. My SD & Gabriel both lost several fingernails and toenails. They grew back with no problems, though.
I hope your LO gets over it ASAP & feels better soon!! HFMD really is something awful.