Many are harmless and temporary, especially when linked to a recent illness.
But a neck lump should be checked if it lasts, grows, feels hard or fixed, appears without infection, or comes with symptoms like night sweats, unexplained weight loss, fever, trouble swallowing, or voice changes.
Disclaimer: This article is for general educational information only and does not replace professional medical advice, diagnosis, or treatment. If you notice a persistent or worrying neck lump, speak with a healthcare professional.
