The New Spot You Just Noticed in the Mirror
Somewhere after 50, the skin starts producing new things. A rough, waxy brown patch on the back. A tiny bright red dot on the abdomen. A soft flap of skin in the armpit. A flat tan mark on the forearm that was not there last summer.
The great majority of these are benign skin growths in older adults, and they need nothing more than an accurate name. But the reason we take every new spot seriously is that a small number of concerning lesions look almost exactly like the harmless ones — and after decades of Florida sun, our patients tend to have plenty of both.
This guide covers the common benign growths, the look-alikes that matter, and the change-over-time rules that tell you which is which. It is meant to complement, not replace, a proper skin cancer screening.
Seborrheic Keratoses: The Barnacles of Aging Skin
These are the single most common growth we are asked about, and patients almost always assume the worst.
- Appearance — tan to dark brown or black, often with a slightly greasy or waxy surface and a rough, warty texture.
- The classic clue — they look stuck on, as though a piece of candle wax were pressed onto the skin rather than growing out of it.
- Where — chest, back, abdomen, face, and along the bra line or belt line. Rarely on palms or soles.
- Behavior — they multiply with age, run strongly in families, and can become irritated, itchy, or crusted when clothing rubs them.
They are entirely benign and never turn into cancer, a point Cleveland Clinic makes plainly in its patient material. We remove them only when they catch on clothing, bleed repeatedly, or sit somewhere that makes them impossible to monitor. A sudden crop of many new ones over a short period is an uncommon finding that deserves an office visit.
Age Spots and Solar Lentigines
Flat, tan-to-brown, sharply bordered patches on the face, forearms, hands, upper chest, and shoulders. They are collections of pigment produced by years of ultraviolet exposure — the same reason they concentrate on the left forearm in people who drive a lot.
Unlike freckles, they do not fade appreciably in winter, and they tend to enlarge slowly over years. They are harmless. The reason we still look closely is that lentigo maligna, an early form of melanoma that favors chronically sun-exposed skin on the face in older adults, can start out looking very much like an ordinary age spot.
The distinguishing features are uneven color within a single lesion, an irregular or notched border, and steady growth or darkening. When a facial spot has any of those, we biopsy rather than watch.
Cherry Angiomas, Skin Tags, and Sebaceous Hyperplasia
Cherry Angiomas
Small, bright red to purple domed papules, usually a millimeter or two across, most often on the trunk. They are tiny benign collections of blood vessels, they increase in number with age, and they bleed briskly if scratched or nicked while shaving. No treatment is needed.
Skin Tags
Soft, skin-colored or slightly darker flaps on a narrow stalk, favoring the neck, armpits, groin, and under the breasts — places where skin rubs skin. They are benign. They occur more often with higher body weight and with diabetes, so a sudden increase is worth a metabolic check. A tag that becomes twisted, dark, and painful has usually lost its blood supply and is easily removed.
Sebaceous Hyperplasia
Small, soft, yellowish bumps on the forehead, nose, and cheeks with a subtle dimple in the center. They are enlarged oil glands, they are common after 50, and their main problem is that they closely resemble early basal cell carcinoma. Dermoscopy in the office usually settles it.
The Look-Alikes That Are Not Benign
This is the part worth reading twice, because these appear on the same sun-exposed skin as everything above.
- Actinic keratosis — a rough, scaly, sandpapery patch that is often easier to feel than to see, typically pink with a gritty scale on the scalp, ears, face, forearms, or the back of the hands. A small proportion progress to squamous cell carcinoma, so they are treated rather than watched. The American Cancer Society describes them as precancerous for this reason.
- Basal cell carcinoma — a pearly or translucent bump with fine visible vessels, sometimes with a rolled border and a central crust or ulcer. The tell is a spot that bleeds, scabs, heals, and then does exactly the same thing again a few weeks later.
- Squamous cell carcinoma — a firm, tender, thickened, scaly, or crusted nodule that grows over weeks to months, often on the ear, lip, scalp, or hand.
- Melanoma — the ABCDE features apply: asymmetry, an irregular border, more than one color, a diameter larger than a pencil eraser, and evolution. Also watch for a dark streak under a fingernail or toenail and any spot on the sole of the foot.
Two rules cut through most of the confusion. Anything that bleeds without being injured deserves evaluation. And anything that has not healed in a month deserves evaluation, regardless of how ordinary it looks.
Why Florida Skin Is Harder to Read
Our patients accumulate these growths earlier and in far greater numbers than patients in northern states. Someone who has spent thirty years in St. Petersburg may carry dozens of seborrheic keratoses, a scattering of angiomas, and widespread lentigines across the shoulders and forearms.
That density is the problem. When there are eighty spots on a back, the one that is changing is genuinely harder to notice — for the patient, for a spouse, and for us. It is a strong argument for photographs, for a consistent examiner, and for continued sun protection, which we cover in our year-round Florida sun safety guide. The Centers for Disease Control and Prevention keeps practical skin-protection guidance that applies just as much at 70 as at 20.
Chronic facial redness is a separate question. Persistent flushing across the cheeks and nose is more often rosacea than any growth, and it is treated differently.
How to Watch Your Own Skin
- Check monthly in good light after a shower, using a hand mirror or a partner for the back, scalp, and the backs of the ears.
- Photograph anything you are unsure about beside a ruler or a coin, and re-photograph in three months from the same distance.
- Learn your own pattern. Most people have a signature style of mole, and the one that does not match it is the one to ask about.
- Do not forget the low-sun places: soles, between toes, under nails, and the scalp part line.
- Bring the list to your annual visit rather than waiting for a dedicated skin appointment.
When to Get a Spot Looked At
Come in for:
- A spot that bleeds spontaneously, or that scabs and reopens repeatedly
- Any sore that has not healed within four weeks
- A growing, changing, or newly itchy or tender lesion
- A mole with uneven color, an irregular border, or recent change in size or shape
- A pearly or translucent bump, especially on the face, ear, or nose
- A rough, scaly patch that keeps coming back after it flakes off
- A dark streak under a nail, or any new pigmented spot on a palm or sole
- A sudden increase in the number of skin tags, which may warrant blood sugar testing
If you have a personal history of skin cancer, a large number of moles, or decades of Florida sun exposure, an annual full-skin exam belongs on the schedule alongside the rest of your primary care.
Have a new spot you are not sure about? Schedule a visit and we will look at it properly rather than leaving you to guess.
