Lymphadenopathy: Symptoms, Causes, Treatment

Lymph nodes are part of the immune system and may become noticeable in the neck, armpits or groin. Enlargement may involve nodes near a local infection or several body regions. Not every neck lump is a lymph node, so examination matters.

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Nodes may be tender or painless, with a sore throat, cold symptoms or fever. Note growth, enlargement in multiple regions, night sweats and unintentional weight loss. The presence or absence of pain cannot reliably determine whether a lump is serious.

Throat, dental and skin infections, including viral illnesses, are common causes. Immune conditions, some medicines and, less commonly, blood cancers or metastatic cancer can also cause enlargement. Persistence alone cannot establish the cause or justify antibiotics.

Relevant factors include recent illness, wounds, dental problems, particular infection exposures, new medicines and immune disease. Age and medical history influence evaluation; a risk factor by itself does not establish a cancer diagnosis.

Assessment includes the timeline, infections, medicines and exposures, followed by examination. A blood count, targeted infection tests or imaging may be appropriate. Needle sampling or a biopsy is reserved for clinical indications and is not necessary for every swollen node.

Treatment addresses the cause. Improving nodes after a straightforward infection may only need observation. Antibiotics treat appropriate bacterial infections, not viruses. Abscesses, immune disorders and cancer require different management. Do not start steroids simply to suppress swelling without a diagnosis.

Complications depend on the underlying illness. A bacterial infection may form an abscess or spread. Delaying assessment of warning signs can delay an important diagnosis, although most enlargement associated with a minor infection does not cause these complications.

No method prevents every cause. Oral care, wound hygiene and usual infection prevention may help. Avoid squeezing the lump or repeatedly pressing it, and track changes instead of trying unprescribed medicines to shrink it.