Wounds from Eldritch Blasts

[TwinBahamut]

I say go for something fantastic. Maybe the flesh is just completely dead and had turned jet black, filled with small dark crystals created as a byproduct of the direct damage inflicted upon the target's lifeforce.

Obviously, if the target was hit with a specialized eldritch blast essence, then it will more closely resemble the kind of damage that essence inflicts. Sickening would leave marks like a disease, vitriolic would leave acid burns, utterdark wouldn't leave anything, really...

 

[Aus_Snow]

There are no wounds in D&D, generally speaking. You go from perfectly healthy and functional to suddenly dying/dead, in the usual order of things. . . excepting that teensy peculiarity (0 HP), of course.

For all intents and purposes (except metagame tracking), 500 HP appears no different (by default) to 5 HP. This is true regardless of the sources of 'damage'.

That's not to say the HP system doesn't work - it does. It just happens to work in this way.

 

[Kae'Yoss]

Maybe something like red-hot shrapnels tearing into you, or like a mix of microwaving and shredding: The flesh is torn up badly, somehow dried up and heated.

 

[IceFractal]

One idea:

The body appears mostly undamaged, but large areas seem brittle and cracked - if prodded much, they make break off and crumble to dust. Some parts of the clothes are extermely fragile, like they were centuries old. Basically a huge infusion of entropy, putting the hit area through the wear of eons.