This document discusses different types of sensory disorders including analgesia, phasia, and dysphagia. It defines analgesia as excessive sensitivity to pain and phasia as a specified speech disorder. The document then provides more details about dysphagia, describing it as difficulty swallowing and the inability to control food or saliva in the mouth. It notes that dysphagia can lead to complications like dehydration, malnutrition, and pneumonia if left untreated. The document concludes by defining the most common symptom of esophageal dysphagia as the inability to swallow solid food.