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.
Most cases of adult scoliosis are idiopathic, which means we do not know their cause. Sometimes adult scoliosis is the result of changes in the spine due to aging and degeneration of the spine. There are several types of scoliosis in adults: Idiopathic Curve - This is the most common type.