A tight bracelet that rubs against your skin, chafing it and causing redness and irritation is an example of something that excoriates.
When you thoroughly condemn a certain behavior, this is an example of a time when you excoriate.
Origin of excoriate
- Middle English excoriaten from Latin excoriāre excoriāt- ex- ex- corium skin sker-1 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition