Disability-adjusted life year for periodontal disease per 100,000 inhabitants in 2004. Periodontitis is very common, and is widely regarded as the second most common dental disease worldwide, after dental decay, and in the United States has a prevalence of 30–50% of the population, but only about 10% have severe forms. Chronic periodontitis affects about 750 million people or about 10.8% of the world population as of 2010. Like other conditions intimately related to access to hygiene and basic medical monitoring and care, periodontitis tends to be more common in economically disadvantaged populations or regions. Its occurrence decreases with a higher standard of living. In Israeli population, individuals of Yemenite, North-African, South Asian, or Mediterranean origin have higher prevalence of periodontal disease than individuals from European descent. Periodontitis is frequently reported to be socially patterned, i.e. people from the lower end of the socioeconomic scale suffer more often from it than people from the upper end of the socioeconomic scale.
symptom of Scurvy
symptom of Haemophilia
symptom of Atransferrinemia
symptom of Vitamin B12 deficiency anemia
symptom of Stevens–Johnson syndrome
symptom of Rabies
symptom of Leishmaniasis
symptom of Chilaiditi syndrome