why lymph nodes stay swollen?
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Why Lymph Nodes Swell Swollen lymph nodes are a sign that they're working hard. More immune cells may be going there, and more waste could be building up. Swelling usually signals an infection of some kind, but it could also be from a condition like rheumatoid arthritis or lupus, or rarely, cancer.
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Swollen lymph glands in the head and neck are normally caused by illnesses such as: ear infection. the cold or flu. sinus infection.
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Lymph nodes can be caused for various reasons, such as a local skin infection, or a blocked or inflamed lymph gland (lymph node). Sometimes lymph nodes come up in response to a recent bacterial or viral infection elsewhere in the body even when someone feels well..
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The term "swollen glands" refers to enlargement of one or more lymph nodes. The medical name for swollen lymph nodes is lymphadenopathy. In a child, a node is considered enlarged if it is more than 1 centimeter (0.4 inch) wide.
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Swollen lymph nodes are a sign that something is wrong somewhere in your body. When your lymph nodes first swell, you might notice: Tenderness and pain in the lymph nodes. Swelling that may be the size of a pea or kidney bean, or even larger in the lymph nodes.
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Lymph nodes often swell in one location when a problem such as an injury, infection, or tumor develops in or near the lymph node. Which lymph nodes are swollen can help identify the problem. The glands on either side of the neck, under the jaw, or behind the ears commonly swell when you have a cold or sore throat.
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You should not normally be able to feel them. Lymph nodes that are just below the skin may be easier to feel when they become swollen as they will become larger. You might experience other symptoms if a lymph node in a deeper part of your body becomes swollen, like a cough or swelling of a limb.
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A swollen lymph node should resolve without treatment. Skin or ear infections are common reasons for the node to swell. If a lump lasts more than 2 weeks or occurs alongside other symptoms, visit a doctor.
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Detecting swollen lymph nodes Swollen lymph nodes can be painful to the touch, or they can hurt when you make certain movements. Swollen lymph nodes under the jaw or on either side of the neck may hurt when you turn your head in a certain way or when you're chewing food.
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Lymph nodes are located in groups, and each group drains a specific area of your body. You may be more likely to notice swelling in certain areas, such as in the lymph nodes in your neck, under your chin, in your armpits and in your groin. The site of the swollen lymph nodes may help identify the underlying cause.
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Usually, swollen lymph nodes aren't a reason to worry. They're simply a sign that your immune system is fighting an infection or illness. But if they're enlarged with no obvious cause, see your doctor to rule out something more serious.
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Lymph nodes that are around 1/2 inch or bigger aren't normal. They shouldn't feel hard or rubbery, and you should be able to move them. The skin over them should not be red, irritated, or warm. And the swelling should go away within a couple of weeks.
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Reactive lymph nodes are usually just a sign that your immune system is doing its job by fighting off an infection. They should go down in size as you heal. If they feel hard or don't seem to be shrinking back to their usual size as your illness resolves (usually within a week or two), contact your doctor.
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Swollen lymph nodes When lymph nodes swell, it can be a sign that the body is fighting an infection, such as a common cold or the flu. Several lymph nodes run along the back of the neck, on either side of the spine. There are also lymph nodes behind each ear.
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Usually lymph nodes are not enlarged and thus not able to be felt, but if you have previously had an infection (such as tonsillitis) you may have noticed and felt lymph nodes becoming enlarged, painful and tender.
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The glands (lymph nodes) on either side of the neck, under the jaw, or behind the ears commonly swell when you have a cold or sore throat. More serious infections may cause the glands to enlarge and become very firm and tender.
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Following infection, lymph nodes occasionally remain permanently enlarged, though they should be non-tender, small (less the 1 cm), have a rubbery consistency and none of the characteristics described above or below.