Generally, pure silver, pure gold, will not be inflamed. If the plastic is cleaned daily, it will not be inflamed.
Many earrings on the market, including some famous brands, are not pure, so they are prone to inflammation. After waiting for the ear hole to grow completely, then chasing fashion, the ear hole that has not been well maintained at the beginning is generally prone to inflammation, and it will not be worth the loss.
Friendly reminder: the general ring earrings heal faster than the earrings. It is estimated that the earrings with loops are breathable before and after the ear holes, unlike the earrings, which always suffocate the ear holes.