Dysphagia is the medical word for difficulty in swallowing. This symptom is usually due to a problem of the gullet (oesophagus). Less commonly, a problem at the back of the mouth, or something pressing on the oesophagus, can cause this symptom. There is a range of different causes of dysphagia - discussed below.
Where in the World. The Mayans are one of the oldest societies documented, and come from Belize, Guatemala, Honduras and El Salvador in Central America and Mexico. You can still visit the ruins of the ancient people in these places today, like the Chichen Itza temple in the Yucatan Peninsula of Mexico.
A member of a Mesoamerican Indian people inhabiting southeast Mexico, Guatemala, and Belize, whose civilization reached its height around ad 300-900. The Maya are noted for their architecture and city planning, their mathematics and calendar, and their hieroglyphic writing system.