• Lumps on Back of Head: Common Causes Explained

Finding lumps on back of head can be concerning, but many of these lumps are harmless and can be attributed to various causes. Understanding these causes can help alleviate fears and guide individuals on when to seek medical advice. Below are some common reasons for the appearance of lumps on back of head.

Table of content

Natural Anatomical Features

One of the most common reasons for lumps on back of head is natural anatomical features, such as the inion, which is the prominent bone at the back of the skull. This is a normal part of human anatomy and does not indicate any health issues.

Head Injuries

Head injuries from car crashes, sports collisions, falls, or blunt force trauma can lead to the formation of lumps on back of head. These lumps may be a result of swelling or bruising in the area where the injury occurred.

Scalp Hematoma

A scalp hematoma is a collection of blood outside of blood vessels, often caused by head trauma. This can result in a noticeable lump on the back of the head, which may require medical evaluation if it persists.

Ingrown Hair

Ingrown hairs, particularly after shaving, can cause small, painful lumps on the scalp. These occur when hair follicles become clogged, leading to inflammation and irritation.

Folliculitis

Folliculitis is the inflammation or infection of hair follicles, which can result in red, swollen lumps on the scalp. This condition can be caused by bacteria, fungi, or irritation from shaving.

Seborrheic Keratosis

Seborrheic keratosis refers to noncancerous skin growths that can appear as raised, wart-like lumps on the scalp. These are generally harmless and do not require treatment unless they become bothersome.

Epidermoid Cyst

An epidermoid cyst is a small, hard lump that forms under the skin. These cysts are typically benign and can occur anywhere on the body, including the back of the head.

Pilar Cyst

Pilar cysts are keratin-filled sacs that form around hair follicles, often found on the scalp. They are usually painless and can be removed if they become bothersome.

Lipoma

A lipoma is a fatty, noncancerous tumor that can develop under the skin. These lumps are generally soft and movable, and they are typically harmless.

Pilomatrixoma

Pilomatrixoma is a benign tumor that arises from hair follicle cells. These lumps are usually firm and can occur on the scalp, often in children and young adults.

Skin Cancer

While most lumps on back of head are benign, skin cancer, including basal cell carcinoma, squamous cell carcinoma, and melanoma, can also present as lumps. It is crucial to monitor any changes in size, shape, or color and consult a healthcare professional if concerned.

Exostosis

Exostosis refers to a bony growth on top of existing bone, which can occur on the skull. These growths are usually benign but may require monitoring or removal if they cause discomfort.

Allergic Reactions

Allergic reactions to products or materials can cause localized swelling and lumps on the scalp. Identifying and avoiding the allergen is key to preventing recurrence.

Cysts

Various types of cysts, including sebaceous cysts, can form on the scalp and present as lumps. These are typically benign and may not require treatment unless they become infected or painful.

Lymphadenopathy

Swollen lymph nodes, or lymphadenopathy, can occur in response to infections or other health issues, leading to lumps on the back of the head. If accompanied by other symptoms, medical evaluation is recommended.

Infections

Infections, whether viral, bacterial, or fungal, can lead to swelling and lumps on the scalp. Conditions like ringworm can cause noticeable lumps and require treatment.

Dermatitis

Dermatitis, or inflammation of the skin, can cause red, itchy lumps on the scalp. Identifying the cause, whether allergic or irritant, is essential for effective management.

Scalp Psoriasis

Scalp psoriasis is a chronic autoimmune condition that can lead to raised, red patches covered with silvery scales. These patches can feel like lumps and may require ongoing treatment.

Follicular Occlusion Syndrome

This syndrome encompasses a group of skin conditions that affect hair follicles, leading to painful lumps and inflammation on the scalp.

Trauma from Tight Hairstyles

Tight hairstyles can cause traction alopecia, leading to hair loss and lumps on the scalp due to inflammation. It is advisable to avoid overly tight styles to prevent this condition.

Osteoma

An osteoma is a benign bone tumor that can develop on the skull, resulting in a hard lump. These tumors are generally asymptomatic and may not require treatment unless they cause discomfort.

Neurofibroma

Neurofibromas are benign tumors that develop on nerve sheaths. They can appear as lumps on the scalp and may require monitoring or surgical removal if symptomatic.

Meningocele

A meningocele is a protrusion of the meninges through a defect in the skull, which can present as a lump. This condition requires immediate medical attention.

Liposarcoma

Liposarcoma is a rare malignant tumor of fatty tissue that can occur in the scalp. If a lump is suspected to be cancerous, prompt evaluation is crucial.

Metastatic Cancer

Metastatic cancer can cause lumps on the scalp if cancer from another part of the body spreads to the skin. This situation necessitates urgent medical evaluation.

Paget's Disease of Bone

Paget's disease can cause abnormal bone growth, leading to lumps on the skull. Treatment may be necessary to manage symptoms and prevent complications.

Hemangioma

A hemangioma is a benign tumor of blood vessels that can appear as a red or purple lump on the scalp. These usually require no treatment unless they cause complications.

Dermatofibroma

Dermatofibromas are benign skin growths that can appear as firm lumps on the scalp. They are typically harmless and do not require treatment unless they become bothersome.

Keloids

Keloids are overgrowths of scar tissue that can form after an injury or surgery, resulting in raised lumps on the scalp. Treatment options are available for those who find them bothersome.

Tension Headaches

Tension headaches can cause muscle tightness and discomfort, leading to the sensation of lumps on the back of the head. Managing stress and tension can help alleviate these symptoms.

Follicular Cysts

Follicular cysts form around hair follicles and can appear as lumps on the scalp. These are usually benign and may not require treatment unless they become infected.

Scalp Infections

Scalp infections, such as ringworm, can lead to swelling and lumps. Treatment is necessary to resolve the infection and alleviate symptoms.

Foreign Body Reactions

Reactions to implants or piercings can cause localized swelling and lumps on the scalp. Identifying and addressing the cause is essential for resolution.

Is it normal to have lumps on the back of your skull?

While finding a new lump or bump on the head can be worrying, in most cases they're usually harmless. However, it's always worth getting any lump or bump checked out by a GP, as they'll be able to assess and advise how best to manage your symptoms and, in case of malignancy, refer you to the correct treatment.

Can lumps on head be cancer?

Many types of cancer, including those that affect the head, can cause lumps to form that can be felt through the skin. While finding a new lump or bump can be alarming, it's important to keep in mind that masses can appear on the surface of—or just below—the skin for many reasons other than cancer.

Is it normal to have small bumps on the back of your head?

There are many reasons why you could develop a bump or lump on the back of your head. Most are harmless. In rare cases, however, a lump on the head could indicate a more serious problem. If you notice changes with the bump on your head, if it's bleeding or is painful, contact your doctor.

When should I be worried about a lump on my head?

If you liked it and want to know more content similar to Lumps on Back of Head: Common Causes Explained. Visit our category Diseases

Lumps on Back of Head: Common Causes Explained