"Scientists at the National Institutes of Health report they have discovered in mouse studies that a small molecule released in the spinal cord triggers a process that is later experienced in the brain as the sensation of itch.
Patients should be aware that topical application of local anesthetics such as Synera (lidocaine and tetracaine) may lead to diminished or blocked sensation in the treated skin. For this reason, patients should avoid inadvertent trauma to the treated area. Such trauma can result from scratching or rubbing before complete sensation has returned, or from exposure to extreme hot or cold temperatures.
Last reviewed on RxList: 1/23/2009
This monograph has been modified to include the generic and brand name in many instances.
Additional Synera Information
- Synera Drug Interactions Center: lidocaine-tetracaine top
- Synera Side Effects Center
- Synera FDA Approved Prescribing Information including Dosage
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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