Dysphagia refers to any difficulty swallowing. It has many potential causes including neurological disorders like stroke, muscular disorders, esophageal issues, and cancers. Clinical features depend on where the issue occurs - oropharyngeal dysphagia may cause coughing or choking while swallowing, while esophageal dysphagia causes food getting stuck. Diagnosis involves tests like barium swallows or endoscopy. Treatment focuses on managing the underlying cause, minimizing aspiration risk through diet changes or swallowing rehabilitation, and ensuring adequate nutrition. Complications can include pneumonia, malnutrition, or choking.