My players drank some magical thalidomide, which caused their arms to shrink to halfling size (they're humans).
What magic cures this? I hope there is some low-level spell that can fix this? Renegeration doesn't seem logical... The limbs are "healthy", they are just tiny.
It just so happens that I have a level 10 Wizard with 13 ranks in Alchemy who would love to help you with a solution to your issue. Feel free to use him as an NPC and a quest fairy. His name is Mordrid, he's Human, he's 14yo, and he's Chaotic Evil. He can usually be found in a bazaar plying his wares. He has two zombies in frilly aprons going around his tent handling minor chores, and three more stand guard at various points.
When presented with the request, his response might go something like this:
[He laughs wildly.]
"Oh, that's good... Tell me how that happened, please..."
[He laughs more at the story.]
"Look, I want you to have that fixed as much as I'm sure you do..." [He gets a manipulative, serious, and condescending look on his face.] "...but I want grave lichen more." [He begins shuffling around tent.] "You'll discover that it is most easily found in the local crypts in all the cracks and crevices between the bricks of the mausoleums. I've gotten old enough that my hands are too big to collect it myself, and I would usually send some hapless child to do it for me in exchange for a short-term delerium potion..." [He grins deviously.] "...but that just gets messy when parents get involved later, and the tummy aches of which they sometimes complain are akin to having too much candy. You provide a happy solution for all of us then, hm?" [He raises an eyebrow and waits patiently for your response.]
If any haggling is done, he's flexible. If you need stats for him, pm me, and I'll get you a copy of his character sheet so you have a ready npc at any given time.