What are the possible causes of a lump below the ear?

Reviewed by Yoshinori Abe, MD

Internal Medicine

A lump below the ear can result from several causes, including swollen lymph nodes, infections, cysts, lipomas, salivary gland issues, or, in rare cases, tumors. Most lumps are benign and linked to minor infections, but persistent, growing, or painful lumps may signal a more serious condition requiring medical evaluation.

Common causes include:

Swollen lymph nodes from colds, ear infections, or strep throat
Sebaceous or epidermoid cysts beneath the skin
Lipomas, which are soft, fatty growths
Salivary gland infections or stones
Mastoiditis, an infection of the bone behind the ear
Tumors, benign or malignant, in rare cases

Because symptoms overlap across conditions, self-diagnosis can be difficult—and delaying evaluation of a serious cause can lead to complications. Understanding whether your lump is likely harmless or warrants urgent care starts with identifying your specific symptom pattern. Take a free, instant, online symptom check to get personalized insights based on your symptoms and clearer guidance on what to do next.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Discover what’s causing your lump below ear Learn if your ear lump needs care today Find out if it could be swollen lymph node See OTC relief for ear lump discomfort Find a doctor for ear and neck lumps Understand safe home care for lump below ear Check if your lump below ear is serious

Not seeing your question? No worries.

Submit your own Question

Explanation

Lymphadenopathy:

One of the most common reasons for a lump below the ear is lymphadenopathy, which refers to swollen lymph nodes. Lymph nodes can become enlarged due to infections, such as viral or bacterial illnesses, or due to inflammatory conditions. For example, infections like the common cold, strep throat, or even dental infections can lead to swollen lymph nodes in the neck and below the ear.

Salivary Gland Issues:

Another possible cause is related to the salivary glands, particularly the parotid gland, which is located near the ear. Conditions such as sialadenitis (inflammation of the salivary gland) or the formation of a salivary gland stone can lead to swelling and lumps in this area. Tumors, both benign and malignant, can also develop in the parotid gland, leading to noticeable lumps.

Cysts and Benign Growths:

Cysts, such as epidermoid cysts or sebaceous cysts, can form in the area below the ear and may present as lumps. These are usually benign and can occur when skin cells or oil become trapped under the skin. While they are generally harmless, they can become infected or inflamed, causing discomfort.

Other Causes:

Infections: Infections in the ear or throat can also lead to swelling and lumps below the ear. Conditions like mastoiditis, which is an infection of the mastoid bone behind the ear, can cause significant swelling and pain.
Tumors: While less common, tumors in the neck or head region can present as lumps below the ear. These can be either benign or malignant, and further evaluation is necessary to determine the nature of the lump.

If you're experiencing a lump below your ear along with other symptoms, you can use a free AI symptom checker to help identify possible causes and determine if you should seek medical attention.

(References)

Ferrer R. Lymphadenopathy: differential diagnosis and evaluation. Am Fam Physician. 1998 Oct 15;58(6):1313-20. PMID: 9803196.
Gaddey HL, Riegel AM. Unexplained Lymphadenopathy: Evaluation and Differential Diagnosis. Am Fam Physician. 2016 Dec 1;94(11):896-903. PMID: 27929264.
Tartaglione T, Botto A, Sciandra M, Gaudino S, Danieli L, Parrilla C, Paludetti G, Colosimo C. Differential diagnosis of parotid gland tumours: which magnetic resonance findings should be taken in account? Acta Otorhinolaryngol Ital. 2015 Oct;35(5):314-20. doi: 10.14639/0392-100X-693. PMID: 26824912; PMCID: PMC4720931.

Thinking about asking ChatGPT?Ask me instead

Tell your friends about us.

We would love to help them too.

For First Time Users

What is Ubie’s Doctor’s Note?

We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.

Was this page helpful?

Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.