FOUND A LUMP UNDER YOUR SKIN? ASK YOURSELF THESE 3 QUESTIONS RIGHT NOW
You're in the shower when your fingers brush over something unexpected: a small lump under your skin that wasn't there before. Your mind immediately races-Is this serious? Could it be cancer? It's natural to feel worried, and that concern is valid. The truth is, some bumps beneath the skin are harmless while others need medical attention, and knowing the difference can give you peace of mind and help you take the right action. We asked two top dermatologists to explain exactly what to look for and when to worry about a lump under the skin. Here's what every woman should know:
Benign lumps under the skin
First, the good news: There are many benign reasons you may notice a lump under the skin-it certainly doesn't always indicate something serious, such as cancer. To better understand the more common causes of bumps and skin growths, we asked Shamsa Kanwal, MD, a board-certified dermatologist at Aesthetic Evolution Skin and Laser Clinic, to weigh in.
"Benign lumps are non-cancerous growths that often come from normal skin structures like hair follicles, oil glands, fat or connective tissue," says Dr. Kanwal. She says the most common benign lumps people experience include:
- Epidermoid cysts: Dr. Kanwal says these small sacs are filled with a natural protein called keratin. This common type of cyst is often located on the face, neck, groin or torso.
- Lipomas: "[These are] soft, fatty lumps on the torso, shoulders, arms or thighs.
- Dermatofibromas: "[These are] firm, small bumps often on the legs."
And what causes these types of lumps? "They happen for simple reasons like a blocked follicle, a trapped skin lining under the surface, genetics, minor trauma, friction or past inflammation," says Dr. Kanwal. "Many are slow-growing, stable over time and cause more annoyance than danger unless they get inflamed or infected."
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Cancerous lumps under the skin
Sometimes, lumps under the skin can be cancerous, making it important to know the early warning signs and your family history of cancer.
"Cancerous lumps under the skin can include skin cancers like melanoma, squamous cell carcinoma and basal cell carcinoma, as well as soft tissue sarcomas or metastatic tumors from internal cancers," says Dara Spearman, MD, a board-certified dermatologist and the owner of Radiant Dermatology Associates.
Dr. Spearman says they can occur anywhere on the body but are more concerning when they appear on sun-exposed areas, grow quickly or develop in deeper tissues like the abdomen or thigh.
"These lumps develop due to abnormal cell growth caused by DNA damage, often from UV exposure, genetic mutations or are spread from another cancer. Unlike benign growths, cancerous lumps tend to grow unchecked and invade surrounding tissue."
When to worry about a lump under your skin
If you notice a lump under the skin that wasn't there before, it's normal to worry. And while you should always seek medical attention to confirm a diagnosis and rule out any serious health issues, here we explain what to track while you wait for your appointment.
Has the lump changed?
Monitoring what happens over time is key to determining whether a lump could potentially be cancerous.
"I would advise focusing on change over time, not just appearance on day one," says Dr. Kanwal. "Benign lumps are often slow-growing, feel smooth and predictable and either stay the same size for months or grow very gradually over years. Lumps that worry me are those that are new and enlarging over weeks, feel unusually firm or fixed, have irregular borders or are paired with skin breakdown like ulceration, bleeding or a sore that will not heal."
Is the lump smooth or inflamed?
While you may have found the lump by touch, using your eyes to monitor it will help you figure out what you're dealing with. "Benign lumps often look skin-colored and smooth, and the skin on top usually looks normal," says Dr. Kanwal. "A cyst may show a small central pore and may look like a dome under the skin."
On the other hand, "Cancerous lumps are more likely to look irregular, inflamed, bruised-looking, red or [purple] or show surface changes like crusting, ulceration or bleeding," says Dr. Kanwal.
"A fast-growing pink bump, a firm nodule with a scaly surface or a lesion that keeps breaking open are common patterns that should not be ignored," adds Dr. Kanwal. "Any lump with a new, dark pigment change or a changing spot that becomes raised should be checked."
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Is the lump soft or firm?
"Many benign lumps feel soft or rubbery and move a bit under the fingers, like a lipoma," says Dr. Kanwal. "Cysts can feel firm but still fairly well-defined, and they sometimes feel slightly squishy if there is fluid inside."
As for cancerous lumps, "they more often feel firm to hard, less mobile and more attached to deeper tissue, and the edges may feel uneven," says Dr. Kanwal. "A practical red flag is a deep lump that is growing and feels fixed rather than sliding under the skin. For deeper soft tissue tumors, size matters too. A lump approaching about five centimeters, about the size of a golf ball, is a good threshold to take seriously."
Why pain isn't a good indicator
When it comes to sensations, Dr. Kanwal says pain could occur with both benign or cancerous lumps. That said, if the lump under your skin is persistently tender, has tingling, numbness or the sensation is strong enough to wake you, you should be evaluated by a professional.
"Get it checked promptly if it is rapidly enlarging over days to weeks, hard, fixed, irregular or associated with skin breakdown, bleeding or a non-healing sore," says Dr. Kanwal. "Infection signs like warmth, spreading redness, pus, fever or red streaking need same-day care, whether or not it is cancer."
A step-by-step guide to checking a lump under the skin
If you're concerned your lump might be cancerous, don't panic. Dr. Spearman offers this reassuring step-by-step guide:
- Try to stay calm and remember that most lumps are not noncancerous.
- Pay attention to when you first noticed the lump, whether it has changed in size or appearance and any other symptoms that occur with it.
- Avoid touching or squeezing the lump, as this can irritate the area.
- Make an appointment with your primary care doctor or a board-certified dermatologist to have the lump evaluated.
- Complete any follow-up tests or specialist visits your doctor recommends, since early evaluation and diagnosis can lead to better outcomes.
Ultimately, finding a bump can feel frightening, but by doing your research on what could be happening in your body, you're prioritizing your health one step at a time.
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This content is not a substitute for professional medical advice or diagnosis. Always consult your physician before pursuing any treatment plan. 2026-02-07T05:21:19Z
