What are the side effects of benzocaine, aminobenzoate and tetracaine?

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Few side effects are associated with benzocaine, aminobenzoate and tetracaine (Cetacaine). In rare cases, people may show symptoms of an allergic reaction, including a rash, swelling, itching, trouble breathing, burning, tenderness, blisters, redness or irritation. Contact your doctor promptly if you notice any of these symptoms.