Iatrogenic
Etymology
From Greek iatros, "physician, healer," plus -genic, "produced by" (from genesis, "origin"). Literally "brought about by the healer." It names harm that flows from treatment — a drug side effect, an infection caught in hospital, a complication of surgery. The concept keeps medicine honest, and the word travels well: an "iatrogenic" policy problem is one the cure created.
adjective · /eye-at-roh-JEN-ik/
Caused by medical treatment itself — an illness or injury that results from the care meant to help.
What it names
A sobering reminder that intervention carries its own risks, useful anywhere a fix creates fresh problems.
Example
The second infection was iatrogenic, picked up during the hospital stay itself.
Related idea
Idiopathic means the cause is unknown; iatrogenic means the cause is the treatment.