Randomized, prospective, multi-center, double blind placebo-controlled parallel group study of a Placebo Topical Solution versus Cocaine HCl 4% Topical Solution for safety and efficacy, and Cocaine HCl 4% and 10% Topical Solution for Safety as an anesthetic prior to a diagnostic procedure or surgery on or through accessible mucous membranes of the nasal cavities. Both domestic (United States) and foreign sites are eligible, and both inpatient and outpatient settings are eligible.