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In medicine, polyphagia (sometimes known as hyperphagia) is a medical sign meaning excessive hunger and abnormally large intake of solids by mouth.auses of increased appetite include: 1  Anxiety. 2  Depression. 3  Certain drugs. 4  Diabetes mellitus. 5  Hyperthyroidism. 6  Hypoglycemia.
What is Dysphagia? Dysphagia is the medical term for difficult or abnormal swallowing. There are many different causes of difficulty swallowing, many of which are benign, but it is an alarming symptom that should be investigated. With the appropriate testing, an explanation can almost always be found.