Lead poisoning

[Schro]

Eating after you worked with lead or using lead utensils for cooking and eating could slowly increase a wound that won't heal on it's own.

From what we know, lead will not leave your body and will slowly (over the years) wreck your brain, making you prone to aggression, paranoia and mania. Common symptoms area also "headaches, stomach cramps, constipation, muscle/joint pain, trouble sleeping, fatigue, irritability, and loss of sex drive.", so the world is your oyster when it comes to wounds.

It could even have two or more stages.
Stage one: Heavy limbs
Stage two: Lead poisoning

since we have no effective way of treating this, I guess only alchemy and lore magic might be helpful treating this.

[Halbertz]

https://www.havenandhearth.com/forum/viewtopic.php?f=48&t=72680

[Hickupp]

Lead will eventually leave your body ... but only very! slowly.

Lead ... Would You Like to Know More?

[Massa]

galena ore should spawn midges made of lead that give you lead poisoning