The purpose of this study is to study the potential benefit of treating chronic neurogenic cough by blocking the nerve responsible for the disease with an injection of local anesthetic/steroid mixture versus a placebo.
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Intervention vs. Placebo in Neurogenic Cough using Capsaicin Challenge
Timeframe: Comparing Changes at Pretreatment, at 30 minutes post treatment, at 1 week post treatment, and at 6 weeks post treatment