If considering pharyngitis, the causes of its occurrence may be associated both with infections and with the influence of external irritants. In many cases, inflammation develops against the background of acute respiratory viral infections, but there are also other factors that may contribute to the development of the disease.
The most common causes include:
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viral infections;
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bacterial infections;
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allergic reactions;
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prolonged inhalation of dry, cold, or polluted air;
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smoking or regular inhalation of tobacco smoke;
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irritation of the mucous membrane by chemical substances;
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decreased local immunity.
According to data from Centers for Disease Control and Prevention, most cases of sore throat are associated specifically with viral infections, while bacterial pathogens, in particular group A streptococci, occur much less often.
Sometimes chronic foci of infection in the oral cavity also contribute to the development of inflammation. For example, untreated caries may support the inflammatory process and create conditions for the reproduction of pathogenic microorganisms.
Doctors at Oxford Medical note that the risk of developing pharyngitis increases with frequent cold-related diseases, constant irritation of the mucous membrane of the pharynx, and the absence of timely treatment of concomitant diseases of the ENT organs.