Mrs. Yarnell was given large doses of antipsychotic medications that had side effects including twitches and dizziness. These side effects were misinterpreted as additional psychopathology. Such a mistaken diagnosis illustrates .

an iatrogenic condition

Explanation:an iatrogenic condition -- Iatrogenic disease or condition are caused by a diagnostic and therapeutic methods of which a patient has been previously or currently using. Due to the fact that when one go to the doctor they get prescription of multiple medicine or drugs, it is likely that one will experience some adverse effect.

These are conditions caused by a treatment that one is taking.

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