Glossitis that is often tender/painful, caused by complete atrophy of the lingual papillae (depapillation). The dorsal tongue surface may be affected totally, or in patches, and may be associated with a burning sensation, pain and/or erythema. Atrophic glossitis is a non-specific finding, and has a great many causes, usually related to iron-deficiency anemia, pernicious anemia, B vitamin complex deficiencies, unrecognized and untreated celiac disease (which often presents without gastrointestinal symptoms), or other factors such as xerostomia (dry mouth). Although the terms Möller and Hunter glossitis were originally used to refer to specifically the glossitis that occurs in vitamin B12 deficiency secondary
The Canon of Medicine The Canon of Medicine The Canon of Medicine ( "al-Qānūn fī al-Ṭibb") is an encyclopedia of medicine in five books compiled by Persian physician-philosopher Avicenna (Ibn Sina) and completed in 1025. It presents an overview of the contemporary medical knowledge of the medieval Islamic world, which had been influenced by earlier traditions including Greco-Roman medicine (particularly Galen), Persian medicine, and Indian medicine. "The Canon of Medicine" remained a medical authority for centuries. It set the standards for medicine in Medieval Europe and the Islamic world and was used as a standard medical textbook through the 18th century in Europe. It