Among the swallowing disorders, dysphagia is the most prevalent and dangerous due to the fact it can lead to tumor formation. The classification of swallowing disorders into obstructive and non-obstructive including . lower motor neuron dysfunction, autoimmune disease and achalasia were discussed in this chapter. The authors also referred to motility disorders in diabetic neuropathy, alcoholism, psychiatric illness and scleroderma – an autoimmune disease that causes weakening of the tissues of the esophagus
