Glossitis is usually very painful, and there may be erosions present in the depths of the fissures. Similar fissured lesions which are not associated with HSV, as may occur in fissured tongue, do not tend to be painful. The name comes from the geometric pattern of the fissures which are longitudinal, crossed or branched. It is described as occurring in immunocompromized persons, e.g. who have leukemia. However, the association between herpes simplex and geometric glossitis is disputed by some due to a lack of gold standard techniques for diagnosis of intraoral herpetic lesions, and the high prevalence of asymptomatic viral shedding
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