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Case Report
Copyright ©The Author(s) 2026.
World J Clin Cases. Feb 6, 2026; 14(4): 117573
Published online Feb 6, 2026. doi: 10.12998/wjcc.v14.i4.117573
Table 1 Naranjo adverse drug reaction probability scale for the patient
Question
Yes
No
Do not know
Score
Are there previous conclusive reports on this reaction?+100+1
Did the adverse event appear after the suspected drug was administered?+2-10+2
Did the adverse reaction improve when the drug was discontinued, or a specific antagonist was administered?+100+1
Did the adverse reaction reappear when the drug was readministered?+2-100
Are there alternative causes (other than the drug) that could on their own have caused the reaction?-1+20+2
Did the reaction reappear when a placebo was given?-1+100
Was the drug detected in the blood (or other fluids) in concentrations known to be toxic?+1000
Was the reaction more severe when the dose was increased or less severe when the dose was decreased?+1000
Did the patient have a similar reaction to the same or similar drugs in any previous exposure?+1000
Was the adverse event confirmed by any objective evidence?+100+1
Total score7