In a definition essay, you explain the meaning of a certain term by giving a detailed description of it, and support your definition with clear examples or facts. Such explanations are needed if a term is special, abstract, disputed or does not have a common meaning.
Dysphagia may be caused by traumatic injuries to the head, neck, or chest and result from accidents or iatrogenic causes. In the latter category, both planned and inadvertent injuries to cranial nerves are common. Many accident victims have involvement of multiple sites.
Causes of reflux-induced dysphagia usually relate to damage of the esophagus. Chronic reflux of stomach acids into your esophagus can irritate your throat and sometimes cause permanent impairment, according to the Mayo Clinic. Scar tissue can develop in your esophagus, which may also create a narrowing of the structure.