Dysphagia refers to difficulty in swallowing. It may be a sensation that suggests difficulty in the passage of solids or liquids from the mouth to the stomach, a lack of pharyngeal sensation, or various other inadequacies of the swallowing mechanism. It should be differentiated from odynophagia (painful swallowing) and globus (a lump sensation in throat). Some patients may have dysphagia and be unaware of it - in such cases, it may go undiagnosed and not be treated, raising the risk of aspiration pneumonia which may prove to be fatal.
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