Table 2. Naranjo adverse drug reactions probability scale evaluation for case report.

	Yes	No	Don't know	Score
1. Are there previous conclusive reports of this Reaction?	Yes			+1
2. Did the adverse event appear after the Suspected drug was administered?	Yes			+2
3. Did the adverse reaction improve when the Drug was discontinued, or a specific antagonist Was administered?	Yes			+1
4. Did the adverse reaction reappear when the Drug was readministered?			N/A	0
5. Are there alternative causes (other than the drug) that could on their own Have caused the reaction?	Yes			−1
6. Did the reaction reappear when a placebo Was given?			N/A	0
7. Was the drug detected in the blood (or other fluids) in concentrations known to be toxic?			N/A	0
8. Was the reaction more severe when the dose Was increased, or less severe when the dose Was decreased?			N/A	0
9. Did the patient have a similar reaction to the Same or similar drug in any previous exposure?		No		0
10. Was the adverse event confirmed by any Objective evidence?	Yes			+1
TOTAL				4

Scale: >8 = highly probable; 5–8 = probable; 1–4 = possible; 0 = doubtful