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.
The Maya, another dominant civilization of Mesoamerica, made temple-pyramids the glorious centers of their great stone cities. One of the most famous, the magnificently carved Temple of the Inscriptions at Palenque (Mexico), was a funerary monument to the seventh century king Hanab Pakal.