Noticing a Bump at the Back of Your Neck? Here’s What It Could Be

Key Takeaways

• A bump at the back of the neck and spine may be caused by fat accumulation, a benign growth, spinal curvature or a prominent vertebra.
• Soft, movable lumps differ from hard, fixed bony prominences.
• Seek medical advice if the bump grows, becomes painful, or appears with numbness, weakness or balance problems.
• Cervical spine conditions may cause neck pain, stiffness, or arm symptoms even without a visible lump.
• Treatment may include medication, physical therapy, injections, or minimally invasive surgery where appropriate.

Introduction

Finding a new bump at the back of your neck and spine can be unsettling. You may feel it while washing your hair, notice it in a photograph or see that the area between your neck and shoulders has become more rounded.

There may be several possible causes, depending on its position, size, texture and mobility. Some bumps are linked to fat accumulation, a naturally prominent vertebra or a benign lipoma, while others may be associated with changes in the cervical spine. Understanding how each type of neck bump typically feels and what other signs may appear can help you know when to seek medical advice. 

Possible Reasons for the Bump Behind Your Neck

1. Buffalo Hump

A buffalo hump, also known as an enlarged dorsocervical fat pad, forms when fat builds up across the lower neck and upper back. It usually looks like a broad, rounded area rather than a small, clearly defined lump.

It may be caused by:

• Weight gain and generalised obesity
• Cushing’s Syndrome and steroids
• HIV therapy (Lipodystrophy)¹
• Insulin resistance

What It Feels and Looks Like

A buffalo hump usually feels broad and soft rather than bony. It also extends across the base of the neck and between the shoulders.

2. Benign Soft Tissue Growth

A lump at the base of the neck may be caused by a benign soft tissue growth, such as a lipoma. A lipoma is made up of fat cells and develops beneath the skin. It can occur in many parts of the body, including the back of the neck².

Unlike a broad area of fat accumulation, a lipoma usually feels like a separate, well-defined lump.

What It Feels and Looks Like

A lipoma is commonly:

• Soft or rubbery
• Painless
• Slow-growing
• Slightly movable beneath the skin
• Covered by normal-looking skin

Not every soft lump is a lipoma. Cysts and other soft tissue growths can feel similar, so a medical assessment may be needed to confirm the cause.

3. Dowager’s Hump

A dowager’s hump is a rounded curve that develops across the upper back and base of the neck. Unlike a buffalo hump, it is caused mainly by the shape and alignment of the spine rather than fat accumulation.

It may develop gradually due to prolonged poor posture, weakening of the muscles that support the spine, or age-related spinal deformities. In some older adults, osteoporosis can weaken the vertebrae and lead to compression fractures, which may further increase the spinal curve.

What It Feels and Looks Like

A dowager’s hump usually looks like a firm, curved prominence rather than a separate movable lump. It is also often accompanied and caused by forward head posture.

4. Prominent Vertebra

The seventh cervical vertebra, or C7, sits near the junction between the neck and upper back. Its spinous process naturally extends further backwards than those of many vertebrae above it, so it can feel like a hard neck spine bump.

The vertebra may become more noticeable in people with less soft tissue around the neck. Forward head posture, rounded shoulders and prolonged desk work can also change the surrounding contour, making the prominence easier to see or feel.

What It Feels and Looks Like

A prominent vertebra is usually:

• Hard and fixed in the centre of the neck
• More noticeable when you bend your head forwards
• Remains similar in position and shape over time
• Painless unless surrounding muscles are strained

When Should You Have a Neck Bump Checked?

Not every bump at the back of the neck or spine requires treatment. However, it is worth arranging a medical assessment if the bump is new, continues to grow, or is accompanied by other symptoms.

Seek medical attention if:

• The bump increases in size, changes in shape, or becomes painful, red or warm
• You develop persistent neck pain or stiffness
• Pain, numbness, tingling or weakness spreads into the shoulder, arm or hand
• You experience difficulty with balance, walking or hand coordination
• The bump appears after significant trauma or is accompanied by unexplained weight loss, fever or night sweats

Could It Be a Problem With Your Cervical Spine?

The causes above usually explain bumps that can be seen or felt from the outside. However, if the prominence is accompanied by persistent neck pain, stiffness or symptoms affecting the arms and hands, your doctor may also assess the cervical spine.

Conditions such as cervical spondylosis, disc degeneration³, and bone spurs develop inside the neck. They do not usually create a separate visible lump, but they can occur alongside postural changes or make the base of the neck feel more prominent. As the discs lose height and the joints experience greater strain, the spaces around the nerves or spinal cord may also become narrower.

Possible symptoms include:

• Persistent neck pain or stiffness
• Reduced ability to turn or tilt the head
• Pain travelling into the shoulder or arm
• Tingling or numbness in the hand
• Weakness in the arm or hand
• Poor balance or reduced hand coordination when the spinal cord is affected

If the bump at the back of your neck and spine is accompanied by these symptoms, your doctor may recommend imaging tests, like an X-ray, CT scan, or MRI.

Treatment and Management Options for Cervical Spine Concerns

1. Conservative Care

Treatment depends on the underlying spinal condition and the severity of your symptoms. When cervical degeneration causes mild neck pain or stiffness without significant nerve compression, your doctor may recommend activity modification, suitable pain-relieving medication, and physical therapy. This can help improve neck movement, strengthen the supporting muscles, and reduce strain on the cervical spine.

2. Image-Guided Spinal Injections

If symptoms persist or imaging shows that a bone spur or degenerated disc is compressing a nerve, an image-guided spinal injection may be considered to reduce inflammation and relieve arm pain or numbness.

3. Surgery for Nerve or Spinal Cord Compression

When significant nerve or spinal cord compression is confirmed, and symptoms do not improve with non-surgical treatment, surgery may be recommended. Depending on the underlying condition, this may involve cervical decompression to relieve pressure on the affected nerve or spinal cord. 

Selected patients may also be suitable for minimally invasive or endoscopic cervical spine surgery, which uses specific instruments and smaller access points to minimise muscle and soft tissue disruption, supporting an earlier return to daily activities where appropriate.

Conclusion

A bump at the back of the neck or spine can have several possible causes, ranging from harmless soft tissue changes to conditions affecting the cervical spine. While many bumps do not require treatment, a medical assessment is worthwhile if the bump changes over time or is accompanied by pain, numbness, or other neurological symptoms.

At Achieve Spine And Orthopaedic Centre, we care for patients aged 13 and above who experience persistent pain, restricted movement or other spine-related symptoms. From teenagers to seniors, our doctors provide compassionate, specialist-led care tailored to each patient’s condition. Arrange a consultation to have your symptoms assessed and understand the next steps.

References:

1. Ceccarelli, G., d’Ettorre, G., Marchetti, F., Rizza, C., Mastroianni, C. M., Carlesimo, B., & Vullo, V. (2011). Development of Buffalo Hump in the course of antiretroviral therapy including raltegravir and unboosted atazanavir: a case report and review of the literature. Journal of medical case reports, 5, 70. https://doi.org/10.1186/1752-1947-5-70  

2. Temelkova, I., Wollina, U., Di Nardo, V., & Tchernev, G. (2018). Lipoma of the Neck. Open access Macedonian journal of medical sciences, 6(10), 1875–1877. https://doi.org/10.3889/oamjms.2018.430  

3. Margetis, K., & Dowling, T. J. (2025, August 2). Cervical degenerative disc disease. StatPearls – NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK560772/