Topical anesthetic drugs provide brief periods of anesthesia to a limited depth in the skin by blocking the movement of sodium ions across the cell membrane and affecting nerve impulses.

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Topical anesthetic drugs work by blocking the movement of sodium ions across the cell membrane and affecting nerve impulses, providing brief periods of anesthesia to a limited depth in the skin.

Topical Anesthetic Drugs Provide Brief Periods of Anesthesia to a Limited