![]() In some cases, there may also be a narrowing of the airways and this could prove fatal. This is a natural immune response of the body which is sometimes also accompanied by inflammation. When certain allergens enter the throat through the mouth, the tissues of the throat increase the production of phlegm in order to flush the irritants out of the body. Phlegm is also present in the throat during viral infections or allergies. Diseases that affect the respiratory system may lead to excess production of phlegm. Phlegm in throat can occur due to various factors. However, in some cases there is an excessive production of phlegm and this may be indicative of certain underlying health problems. In fact, phlegm is useful in many ways as it helps to trap foreign substances such as dust and obstructs them from entering the respiratory tract. A small amount of phlegm is normally present in the throat and is not a cause for concern. Many individuals experience phlegm in throat because once it is secreted the cilia in the lower airways push the phlegm into the throat. ![]() ![]() ![]() The mucus membranes that line the respiratory tract produce a thick, sticky substance known as phlegm.
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