This page shows results related to Aspirin and Headache from the FDA Adverse Event Reporting System (AERS).
Click here to learn about all Aspirin adverse events.The Naranjo Scale is a questionnaire for determining the likelihood of whether an adverse drug reaction is actually due to the drug or caused by other factors. Probability is assigned via a score termed definite, probable, possible or doubtful.*
| YES | NO | UNKOWN | |
|---|---|---|---|
| Are there previous conclusive reports on this reaction? | |||
| Did the adverse event appear after the suspected drug was administered? | |||
| Did the adverse reaction improve when the drug was discontinued or a specific antagonist was administered? | |||
| Did the adverse reaction reappear when the drug was readministered? | |||
| Are there alternative causes (other than the drug) that could on their own have caused the reaction? | |||
| Did the reaction reappear when a placebo was given? | |||
| Was the drug detected in the blood (or other fluids) in concentrations known to be toxic? | |||
| Was the reaction more severe when the dose was increased, or less severe when the dose was decreased? | |||
| Did the patient have a similar reaction to the same or similar drugs in any previous exposure? | |||
| Was the adverse event confirmed by any objective evidence? |
*Naranjo, et al. "A method for estimating the probability of adverse drug reactions." Clin Pharmacol Ther. 1981 Aug;30(2):239-45.
To learn more about all adverse events for Aspirin, view the complete Aspirin adverse event report.
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