Neck Lumps Explained: Possible Causes and When to Worry

fixed in place, painless, growing, or lasting more than a few weeks should be checked.

Cancer Research UK advises that persistent lumps or swelling anywhere in the body, including the neck, should be taken seriously and discussed with a doctor.

You should also seek medical advice if a neck lump comes with:

unexplained weight loss
night sweats
persistent fever
trouble swallowing
voice changes or hoarseness
ongoing sore throat
coughing that does not improve
pain in the ear, mouth, or throat
swelling above or below the collarbone

Head and neck symptoms