Large, Hard, Small, Painful Lump on Butt Cheek: Causes, Symptoms, Diagnosis.

Experiencing a painful sensation each time you sit down? A highly localized pain on your buttocks may indicate the presence of something infectious and perhaps even dangerous. Identifying and evaluating any kind of sore lump is the first step in an effective course of treatment. Let’s start by determining exactly what’s going on with that lump inside the cheek or more visibly atop the epidermis.

Symptoms of a Lump on the Butt Cheek

The most conventional repeated complaints from patients involving buttocks lumps unsurprisingly encompass pain and tenderness at the site which becomes swollen and undeniably sore.

Other, more disconcerting, frightening symptoms include purulent discharge, discoloration, fever, and blister development. Though most lumps on the butt cheek are relatively ordinary and manipulable, consulting a dermatology veteran regarding the bump is encouraged.

Possible Diagnoses

Various possibilities exist for reaching a diagnosis on lumps and bumps on the plump posterior. They range from common to uncommon and rare and require varying levels of urgency on your part. Let’s explore a few of them.


Also called furuncles, boils are gross infections that emerge from inside hair follicles and oil glands. These infections start out rather tender, but as the furuncle grows, it will feel like a hard lump in the bum cheek. It forms at the root of the hair and slowly emerges to protrude outward on the skin. It’s not uncommon for such an infection to spread easily and become a recurring nuisance.

Boils can come to head, and look like a white lump with redness surrounding the area. The whiteness comes from the buildup of pus and bacteria within. Sometimes boils will leak on their own, but always resist the temptation to squeeze them.

Causes of Boils

More often than not, Staphylococcus aureus is the bacteria we can thank for boils. Colloquially dubbed ‘staph’ in the medical community, this bacterial manifestation is perpetually alive on the skin, as well as in the upper respiratory tract and mucous membranes.

Overweight, obese, and morbidly obese men and women are more susceptible to boils, as the aforementioned bacteria collects in the folds of the skin, in particularly sweaty areas, and regions that experience a lot of friction.

Other causes, preexisting conditions, and risk factors of boils include eczema, diabetes mellitus, heavy tobacco use, anemia or iron deficiency, and close proximity to another household member who frequently succumbs to boils. The bacteria thrives not only on the skin, but also contaminates clothing, bed sheets, towels, and other upholsteries and linens throughout the house.

Treatment of Boils

Treating a hard lump in the bum cheek that’s been diagnosed as a boil can usually be done in the privacy of one’s own home and professional medical intervention is rarely necessary. Hot compresses several times a day often does the trick to draw out the fluid that’s built up inside, paired with increasing your intake of vitamins and minerals (such as vitamin C), and staying hydrated can speed up the healing process.

Prescription methods of curing a boil include topical antibiotic creams and oral antibiotics like Cleocin (clindamycin), Keflex (cephalexin), Vancocin (vancomycin), and Doryx (doxycycline) to name a few.

Unfortunately, though, not all strains of staph can be remedied with antibiotics, as some are completely resistant, like MRSA (Methicillin-resistant Staphylococcus aureus). Typical signs of MRSA are no changes or worsening of symptoms after a course of antibiotics. This would yield further comprehensive medical management.


Your face is not the only area of your skin prone to pimples (medically referred to as comedones). Like boils, these blemishes are filled with bacteria, but may also arise as a result of the accumulation of dead skin cells and/or oil over productivity.

A pimple on the butt may present as a small lump, perhaps with a head on the tip. As you would treat a pimple on the face, perhaps near the jaw, you could manage a zit on the rear. Adequate personal hygiene is recommended to prevent reoccurrence.


If the darker colored or black lump on your buttock, consider the possibility of a mole. Moles appear on the skin when pigmentation clusters. The cells that are responsible for pigment are known as melanocytes. When these develop on the skin, on any part of the body, the only thing to do is closely observe and take note of any changes to the size and shape of the growth. Moles are oft associated with no pain.

Should the mole remain unchanged, treatment is not necessary. When its shape shifts or grows larger, consult your physician right away.

Other Considerations for a Lump on the Butt

Dermatofibromas are relatively common growths that often occur on the lower extremities, and, you guessed it, on the behind. Not a large lump, not usually bigger than half an inch in diameter, and typically red or brownish, a dermatofibroma is not cancerous nor dangerous or infectious.These superficial fibrous histiocytomas may be left untreated, as they’re benign. Unless of course, they’re unsightly—in which case, they can be surgically removed, not without leaving behind some scarring.

Sometimes abscesses may feel like a lump inside the cheek, or it can protrude more obviously. These can grow to be the size of a pool ball if left untreated or uncared for. Bacterium multiplies beneath the skin, and a pocket of pus forms and subsequently grows. While they may diminish over time on their own, it’s best to see a doctor for an abscess. They will be able to lance or drain it safely.

Fatty tumors, also called lipomas can develop on the buttcheek as well, typically affecting the older population. On the butt, they’re called a gluteal lipoma. These mesenchymal tumors occur where fat is prevalent and are benign, which means leaving them alone is often the only action to take.

Of course, any seemingly unusual growths, lumps, bumps, contusions, and so on, should be checked by your healthcare provider. To acquire an accurate diagnosis and treatment plan, it’s not recommended to self-diagnose.



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