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Celiac disease, celiac sprue, or gluten-sensitive enteropathy, is a generalized autoimmune disease characterized by chronic inflammation and atrophy of the small bowel mucosa. It is caused by dietary exposure to gluten and affects genetically predisposed individuals. In Mexico, at least 800,000 are estimated to possibly have the disease, prompting the Asociación Mexicana de Gastroenterología to summon a multidisciplinary group of experts to develop the "Clinical guidelines on the diagnosis and treatment of celiac disease in Mexico" and establish recommendations for the medical community, its patients, and the general population. The participating medical professionals were divided into three working groups and were given the selected bibliographic material by the coordinators (ART, LUD, JMRT), who proposed the statements that were discussed and voted upon in three sessions: two voting rounds were carried out electronically and one at a face-to-face meeting. Thirty-nine statements were accepted, and once approved, were developed and revised by the coordinators, and their final version was approved by all the participants. It was emphasized in the document that epidemiology and risk factors associated with celiac disease (first-degree relatives, autoimmune diseases, high-risk populations) in Mexico are similar to those described in other parts of the world. Standards for diagnosing the disease and its appropriate treatment in the Mexican patient were established. The guidelines also highlighted the fact that a strict gluten-free diet is essential only in persons with confirmed celiac disease, and that the role of gluten is still a subject of debate in relation to nonceliac, gluten-sensitive patients.

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Background The purpose of the study was to evaluate the clinical patterns of atrophy of the filiform papillae (FP) of the tongue and their relationship with the serum levels of iron and vitamin B12 among patients with systemic diseases, in a tertiary care center. Methods A cross‐sectional, analytical, research study was designed. A systematic tongue examination was performed to evaluate the presence and clinical patterns of FP atrophy. We collected epidemiologic, clinical, and laboratory data. Statistical analysis included χ2 test, Fisher's exact test, Kruskal–Wallis test, and a logistic regression analysis. Results A total of 87 patients (83.9% females) were included [median age = 55 (range 20–89) years]. Endocrinopathy (60.9%) was the most frequent comorbidity. We found atrophy of the FP in 90.8% of the patients; the atrophy was mild in 83.5% of the cases, and severe in 16.5%. The most common atrophic patterns were as follows: focalized in 64 (73.6%) cases, “U”‐shaped pattern in 60 (69%), and generalized in 30 (34.5%). Geographic tongue and median rhomboid glossitis were observed in 12 (13.8%) and 11 (12.6%) subjects, respectively. Lower titers of serum iron were detected in cases with focal (median = 71 vs. 110 mcg/dl) and generalized (median = 55 vs. 78 mcg/dl) FP atrophy (P = 0.03 and P = 0.009, respectively), than their counterparts. The presence of symptomatology was related to the focal pattern of atrophy (P = 0.038). Conclusions A high frequency of filiform papillary atrophy of the tongue was observed in patients with comorbidities. Some atrophic patterns of the tongue were significantly associated with certain medical conditions.