26 December 2020
: Case report 
A Case of Lingua Villosa Nigra (Black Hairy Tongue) in a 3-Month-Old Infant
Mistake in diagnosis, Unusual or unexpected effect of treatment, Diagnostic / therapeutic accidents, Unexpected drug reaction, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis)
Joanna E. Owczarek-Drabińska1ABCEF*, Małgorzata Radwan-Oczko1CEGDOI: 10.12659/AJCR.926362
Am J Case Rep 2020; 21:e926362
Table 1. Naranjo adverse drug reaction probability scale with answers in regard to the presented case.
| Naranjo question | Naranjo answer and score | |
|---|---|---|
| 1. | Are there previous conclusive reports on this reaction? | No; 0 |
| 2. | Did the adverse events appear after the suspected drug was given? | Yes; +2 |
| 3. | Did the adverse reaction improve when the drug was discontinued or a specific antagonist was given? | Yes; +1 |
| 4. | Did the adverse reaction appear when the drug was readministered? | Do not know; 0 |
| 5. | Are there alternative causes that could have caused the reaction? | No; +2 |
| 6. | Did the reaction reappear when a placebo was given? | Do not know; 0 |
| 7. | Was the drug detected in any body fluid in toxic concentrations? | Do not know; 0 |
| 8. | Was the reaction more severe when the dose was increased, or less severe when the dose was decreased? | Do not know; 0 |
| 9. | Did the patient have a similar reaction to the same or similar drugs in any previous exposure? | Do not know; 0 |
| 10. | Was the adverse event confirmed by any objective evidence? | Yes; +1 |