![]() pharyngitis, an infection of the pharynx, often referred to simply as “sore throat”.fifth disease, a viral illness marked by a red rash on your face and other parts of your body.Some potential infectious and autoimmune causes of rash and swollen lymph nodes include: Those medications include penicillin, allopurinol (Zyloprim, Lopurin), and hydralazine. However, a rash may not be present at the same time.Ĭertain medications can cause a syndrome called serum sickness that manifests as fever, joint pain, rash, and lymphadenopathy. If your rash and swollen lymph nodes are caused by a serious infection, you may need medical treatment.Įnlargement of the lymph nodes, or lymphadenopathy, can also be due to cancers such as head and neck malignancies and lymphoma. If you have a minor infection, your symptoms will likely resolve on their own with time and rest. Once in the lymph system, cancer cells can move through the lymph vessels to distant parts of the body, where they can form new tumors (metastasis).What causes a rash and swollen lymph nodes?Ī rash and swollen lymph nodes are symptoms of an infection or immune response. But cancer cells can also spread from another part of the body to lymph nodes, usually the ones that are closest to the primary tumor.įor example, breast cancer may spread to the lymph nodes under the arm or near the collarbone. Lymphoma is a type of cancer that starts in the lymph nodes. You can have swollen lymph nodes for many reasons, such as strep throat, an ear infection, or an immune system disease.Ĭancer can also cause swollen lymph nodes. Sometimes, there are multiple areas of swollen lymph nodes, which is called generalized lymphadenopathy. There’s usually a single area of swollen lymph nodes, such as the neck, underarm, or groin. But swelling alone isn’t enough to tell you exactly what it is. When your lymph nodes are swollen, you know there’s something going on. When you have an infection, injury, or cancer, lymph nodes swell up as they filter out problem substances. The lymph nodes act as filters for germs and foreign substances. Lymph fluid, which contains white blood cells to fight infection, travels through lymph vessels. There are approximately 800 lymph nodes scattered throughout your body, with more than a third located in the head and neck. It’s a network of lymph vessels and lymph nodes. The lymph system is part of the immune system. The tissue samples will go to a laboratory where a pathologist will use a microscope to look for cancer cells.Ī biopsy often follows a cancer diagnosis, even if the lymph nodes appear normal. This can be done with a needle, or the lymph nodes can be removed during surgery. You’ve recently been treated for cancer or you’re currently in treatment.Ī biopsy involves getting a sample of tissue from the lymph nodes.Physical examination and diagnostic testing can’t determine the cause.The only way to know for certain if your lymph nodes are benign versus malignant is to perform a lymph node biopsy. imaging tests, such as X-ray, CT scan, MRI, or ultrasound to get a better look at the lymph nodes.blood tests to check for infection and underlying conditions.If your lymph nodes are swollen, your doctor will likely start by feeling some of your lymph nodes and looking for other signs and symptoms of illness. How do doctors diagnose benign vs. malignant lymph nodes? You’re currently in treatment or recently completed treatment for cancer. ![]()
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