Dysphagia is the medical term for the symptom of difficulty in swallowing. Although classified under "symptoms and signs" in ICD-10, the term is sometimes used as a condition in its own right. Sufferers are sometimes unaware of their dysphagia.
It is derived from the Greek dys meaning bad or disordered, and phago meaning "eat". It is a sensation that suggests difficulty in the passage of solids or liquids from the mouth to the stomach. Dysphagia is distinguished from other symptoms including odynophagia, which is defined as painful swallowing, and globus, which is the sensation of a lump in the throat. A psychogenic dysphagia is known as phagophobia.
It is also worthwhile to refer to the physiology of swallowing in understanding dysphagia.
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