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What does making a finding required do and how does it affect my differential?

A required finding has two purposes in VisualDx:

• It determines the workup questions, and
• It limits differential results to only the diagnoses that contain the finding.
  • For example, if Fever and Rash are required (green) and Headache is optional (gray), the diagnoses you see in a differential will be required to have Fever and Rash, but may not contain Headache. However, any diagnoses that also have Headache will be ranked higher in the results than diagnoses that do not. Optional findings do not remove diagnoses from your differential.

At least one finding must be designated “required” to build a differential.