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MSD Manual

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MSD Manual
Professional Version
The trusted provider of medical information since 1899
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Professional /
Ear, Nose, and Throat Disorders /
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Approach to the Patient With Nasal and Pharyngeal Symptoms /

Approach to the Patient With Nasal and Pharyngeal Symptoms

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Merck & Co., Inc., Kenilworth, NJ, USA (known as MSD outside of the US and Canada) is a global healthcare leader working to help the world be well. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world.  The Manual was first published as the Merck Manual in 1899 as a service to the community. The legacy of this great resource continues as the MSD Manual outside of North America. Learn more about our commitment to Global Medical Knowledge.

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