A lump behind the ear can have many potential causes, including acne, cysts, and infections. Swollen lymph nodes and certain cancers can also cause lumps. It is best to contact a doctor for advice if a lump develops.
In some cases, the lump may not cause any other symptoms, and it may resolve on its own. However, depending on the cause, medical treatment may also be necessary.
This article discusses the possible causes of a lump behind the ear, when to seek medical advice, and how doctors diagnose the cause of the lump.
Acne is a common skin condition that most commonly affects the face. It might also cause a lump behind the ear, near the face.
With acne, pores in the skin become blocked with sebum. Sebum is an oily substance secreted by glands at the base of hair follicles. The sebum mixes with dead skin cells and can form a layer called a comedone.
A pimple might become infected and inflamed if certain bacteria enter the comedone.
Inflamed pimples can grow and, in their most severe form, create lumps called acne cysts.
If the lump is due to acne, pressing on it may cause pain.
Treatments for acne include:
- topical medications such as antibiotics and retinoids
- oral antibiotics
- hormone therapy
- photodynamic therapy
- chemical peels
A person’s doctor can advise on what treatments they recommend for acne.
A cyst can occur anywhere in the skin, including behind the ear.
Skin cysts are fluid-filled sacs. They form a raised, dome-shaped area on the skin. Sometimes, they have a black spot called a punctum at the top.
Cysts can typically move around freely if a person tries to move them.
Epidermoid cysts are
Lipoma is another possible cause of lumps behind the ear. Lipomas are benign fatty lumps that can grow anywhere there are fat cells.
They are more common on other parts of the body,
A lipoma feels soft to the touch. It is not usually tender or painful unless it presses on nearby nerves.
Cosmetic surgeons can remove lipomas, though treatment may not be necessary. A person’s doctor can advise on whether they recommend removing the lipoma lump and answer any questions a person may have.
The lymph nodes are part of the immune system that help filter and drain foreign substances. They grow in various locations throughout the body, including behind the ear.
The lymph nodes behind the ear are called the posterior auricular lymph nodes.
A lymph node can swell for a number of reasons, including:
- infection
- skin conditions
- dental issues
- cancer
Treatments for swollen lymph nodes can depend on the underlying cause.
Mastoiditis is a bacterial infection affecting the mastoid. The mastoid is the part of the skull bone behind the ear.
The infection develops in the air spaces of the bone. The mastoid has a honeycomb-like structure. Bacteria can enter and infect these air cells.
Mastoiditis is more common in children than adults. It is a serious infection that needs medical attention. The swelling behind the ear will usually be tender and might cause the ear to push outward.
Other symptoms may go with the lump, including:
- ear discharge
- possible hearing loss
- high temperature
- feeling unwell and irritable
- headache
A person is more likely to develop mastoiditis if they have a severe ear infection or frequent ear infections.
A doctor will usually prescribe antibiotics to treat the infection. An ear, nose, and throat (ENT) doctor may treat some cases with surgery to drain or remove the infection.
Although uncommon, a lump behind the ear can indicate cancer. This includes salivary gland cancer.
A cancerous lump is usually:
- firm to the touch
- irregular or uneven in shape
- fixed in place if a person tries to move it
It is important to contact a doctor as soon as there are concerns about a lump. The doctor will be able to perform a physical examination and order tests to confirm the diagnosis.
It is important to contact a doctor if a person develops a new lump or if there are changes to an existing lump.
It is especially important to contact a doctor about a lump if it:
- is painful
- has discharge
- is fixed in place
- changes or grows
- appears suddenly
- accompanies more general symptoms
To assist with reaching an accurate diagnosis, a doctor may begin by examining the appearance and texture of the lump.
They may then ask a range of questions about a person’s symptoms and take a full medical history.
In some cases, the doctor may order tests to confirm a diagnosis. This might include an ultrasound scan or a biopsy. A biopsy involves removing a sample of tissue for analysis in a laboratory.
The doctor will be able to advise on any tests they order and answer any questions a person may have.
The following are frequently asked questions about bumps behind the ear.
When should I worry about swollen lymph nodes behind my ear?
Swollen lymph nodes behind the ear can indicate cancer. However, it is important to remember that swollen lymph nodes are
People should contact a doctor if the swollen lymph node:
- gets bigger
- feels hard or does not move when pressed
- does not go down within 1 week
How do you treat a swollen lymph node behind your ear?
Treatment for swollen lymph nodes behind the ear depends on the underlying cause. However, a person may benefit from drinking plenty of fluids, taking over-the-counter painkillers like ibuprofen, and getting plenty of rest.
Why is my lymph node swollen behind my ear?
A person may develop swollen lymph nodes behind the ear due to infection, skin conditions, dental issues, or cancer.
Is it normal to have a lump behind your ear?
Whether it is normal to have a lump behind the ear depends on its cause. It may be common to develop a lump behind the ear if the cause is acne. However, it can sometimes indicate a more serious condition, such as cancer.
A person should contact a doctor if they are concerned about having a lump behind the ear.
What does a lump behind the right ear mean?
A bump behind the right ear could develop due to many reasons, including acne, a cyst, a swollen lymph node, or mastoiditis. A less likely cause includes cancer.
Should I worry about a hard lump behind my ear?
A person should contact a doctor if they develop a hard lump behind the ear. This is because a hard lump might be an indication of cancer. A cancerous lump is usually firm to the touch, irregular or uneven in shape, and fixed in place.
There are numerous possible causes of a lump behind the ear. Examples include acne, an infection, cysts, and swollen lymph nodes.
In some cases, a lump behind the ear may be cancerous. A cancerous lump is typically firm to the touch and fixed in place. It may also be painful and produce discharge.
It is best to contact a doctor as soon as a person notices a new lump or experiences changes in an existing lump. The doctor will be able to perform an examination, and they may order tests to reach an accurate diagnosis.