Tropical diseases are a group of infections and illnesses that are commonly found in subtropical and tropical regions. These diseases are usually caused by parasites, bacteria, and viruses. Some synonyms for tropical diseases include diseases of the developing world, neglected diseases, and endemic diseases. Neglected diseases are diseases that are often overlooked by the medical community due to various factors like lack of funding, research and development. Diseases of the developing world are infectious diseases which are prevalent in poor and undeveloped countries. Endemic diseases are those diseases that are present in a particular region or community all the time. These synonyms are used to describe the same group of communicable diseases that affect people living in tropical regions.