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Skin Cancer Symptoms: The Signs To Watch For

Skin cancer is often painless early on — the symptoms are visual. Here are the signs that mean a spot should be checked.

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Written & reviewed by Dr Rupinder Singh Walia — MBBS, FRACGP, Dip. Dermatology (Cardiff, UK) · AHPRA MED0001647256 · special interest in skin cancer medicine & dermoscopy
The signs that mean “get it checked”
New
a new, unusual spot
Changing
size, shape or colour
Growing
getting bigger
Bleeding
or crusting, or itching
Won’t heal
a sore that keeps returning
Any one of these is worth a doctor’s eye — skin cancer is often painless early on.

Skin cancer is often painless in its early stages — the “symptoms” are mostly what a spot looks like, not how it feels. That is precisely why it is easy to ignore. Knowing the visual signs is what lets you catch it early, when it is most treatable. If a spot has any of these signs, a doctor can review it for $49.

The core warning signs

Symptoms by type

Why “painless” is the trap

Because early skin cancer does not hurt, people wait for a symptom that never comes. Do not wait for pain — act on the visual signs. See what skin cancer looks like, or get a spot reviewed — $49.

Not a diagnosis; cannot rule cancer in or out.

Worried about a mole, mark or changing skin area?

Most skin-cancer advice tells you to watch for change. Skin360AI helps you keep photos of one or more spots connected over time. A spot can be a mole, freckle, mark, lump, sore, patch or any skin area you want to watch. It is not a diagnosis and cannot rule skin cancer in or out.

Free AI skin check A$49 doctor review

If a lesion is new, changing, bleeding, non-healing or worrying you, arrange an in-person GP or skin-cancer clinic assessment.

Related guides

Skin cancer: types & signs →Basal cell carcinoma (BCC) →What melanoma looks like →Nodular & amelanotic melanoma →Lentigo maligna (sun-spot melanoma) →Squamous cell carcinoma (SCC) →Is my mole skin cancer? →A$49 online mole photo review →What does skin cancer look like? →How much is a skin check? →Free AI skin check online →Skin360AI photo follow-up →

Check and watch the spots you care about over time

Use the free AI-assisted skin check to save photos of moles, marks, lumps, sores, patches or other skin areas you want to watch. A photo record is not a diagnosis or a cancer all-clear.

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See how skin monitoring works →

A structured photo record is not a diagnosis, cannot exclude skin cancer and does not replace an in-person examination.
Medically reviewed by Dr Rupinder Singh Walia (MBBS, FRACGP, Diploma in Dermatology — Cardiff University, UK; AHPRA MED0001647256). Last reviewed August 2026. This information is general and is not a diagnosis; it cannot rule skin cancer in or out. See your GP or a skin-cancer clinic in person for anything that concerns you.
From the author. This guide reflects the approach in Dr Walia’s book, The Skin Cancer Guide Your Doctor Wants You to Read — a plain-language guide to catching skin cancer early.
Free AI skin check → Free online skin check · photo record · no card