Hard, Small, Painful Lumps on back of head, top, left and right side of head

While standing in the shower shampooing and conditioning your scalp, you might feel a painful lump on back of head or even on a lump on top of head region. The small lump feels like bones but you know your skull should be smooth so you wonder what is causing the painful lump. Just remember, all humans and primates have a bump on the back of their skull that varies in size. They call the bubble-like protrusion an inion. It is the point at which the bottom of the skull attaches to the neck’s muscles to create a solid bond for head support. All inions are unique.

Common Reason for a Lump on Head

Everyone has sustained a goose egg before by playing sports (a baseball beams you in the head, a hockey puck catches you in the temple, or a frisbee glances off the side of your noggin) or by roughhousing with a buddy or sibling. In the worst-case scenario, you might have gotten into a brawl at the local pub and been conked in the head with a beer bottle, mug, or bat.

The impact forms a lump on head that feels solid or is a hematoma. Ideally, seek medical help ASAP to rule out a concussion or brain hemorrhage. Please remember, a subdural, intracranial, or epidural bleed can prove fatal if not treated. There are lots of ways you can sustain a head injury that causes on lump on side of head or left side of head.

  • Automobile or motorcycle collision
  • Fall
  • Blunt force trauma
  • High impact sports such as soccer, football, motocross, wrestling, or boxing.
  • Lack of or malfunctioning helmet during motocross, snowmobiling, mountain biking, or rock climbing.
  • Combat injury
  • Violence
  • Explosion

Lump on Back of Head From Folliculitis

Folliculitis occurs from an infected hair follicle. The condition is probably the most common cause of a lump on the back head or behind ear area. They often refer to folliculitis as barber’s itch, razor bumps, or hot tub rash. The nodule is often itchy and sore. The infection often develops into an oozing open sore. Men who shave their heads are at special risk for folliculitis. If the infection becomes extreme, then surgery might be required for drainage followed by antibiotics. Eventually, the hard lump on back of head clears up.

Hard Lump on Back of Head: Ingrown Hair

If you are like most people, you are a back sleeper. Your head is constantly rubbing across your pillowcase, pillow or mattress. Also, you might enjoy wearing a ball cap which causes the snug band of the hat to rub across the back regions of your head. Eventually a hard lump on back of head forms that is a simple ingrown hair. The irritation impairs the new hair’s growth and it cannot emerge from the sheath so it forms an infection. Even shaving your head can cause ingrown hairs.

Developing a Painful Lump on Back of Head

Exostosis is an uncomfortable bony growth that develops directly on top of your skull. Any bone can suffer an exostosis. The condition commonly manifests in childhood. They also call the condition osteoma. It occurs on any bone but when covered in a layer of cartilage they refer to it as osteochondroma. They accomplish a diagnosis with an x-ray. The condition is declared Hereditary multiple exostoses (HME) if you experience over one of the growths anywhere on the body. The treatment plan includes surgery.

Lump on Top of Head Diagnosis

If you work outside without a hat, then your skull receives an overabundance of UV light, this is especially true for construction workers, roofers, road workers, concrete layers, framers, and landscapers. Many wear hats to shield their skin for the sunlight. However, if a lump on top of your head appears then you might suffer from skin cancer such as basal cell or melanoma. Balding men are at increased risk. Basal cell cancers begin hidden deep in the skin layers. As the tumor grows it forms a skin-colored, pink, or reddish nodule. Moh’s surgery is a common form of treatment, a layer of skin at a time is removed until the area is free of cancerous cells.  It is probably the least disfiguring forms of surgery. The causes are usually always chronic sun exposure.

Seborrheic Keratoses in Seniors

Seborrheic keratoses occur anywhere but are the most frequently discovered on the head and behind the ear in the elderly. When you first see the dark brown or black skin growth, you might automatically think melanoma.
However, it is benign. Diagnosis is usually visual. It has a wartlike appearance that varies in thickness. They occur in a round or oval shape. The most common removal techniques include cryosurgery, electrosurgery, and curettage. One removed, it rarely ever returns and is considered a cure of choice. The causes are aging skin or hereditary influence.

Pilomatrixoma Growths Occur in All Age Groups

Pilomatrixoma is not dangerous. The benign tumor feels robust and solid to the touch. It occurs when calcium forms a bump beneath your skin’s surface. The most frequent sites are the head, neck, and face. Most doctors avoid removing the calcium growth unless they suspect that the cells might have morphed into cancer. The lesions may also become infected, especially if you pick at the site or it constantly gets raked with a comb or brush.



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