Melanoma skin cancer

Also called Melanoma or Malignant melanoma

Melanoma is a type of skin cancer that can spread to other parts of the body. The main sign is a new mole or a change in an existing mole. It can appear anywhere, including areas not exposed to the sun, under nails and on the soles of the feet. UV light from the sun and sunbeds is the main cause.

Last updated Nov 9, 2026

What it is

Found early, it can usually be cured with surgery to remove it.

Advanced melanoma may be treated with immunotherapy, targeted therapy or radiotherapy. Sun protection and regular skin checks help prevent and catch it early.

Common signs

  • A new mole or a change in an existing mole
  • A mole with an uneven shape or border
  • A mole with several colours
  • A mole that is growing
  • A mole that itches, bleeds or crusts

How it is usually diagnosed

  • Skin examination with a dermatoscope
  • Removal of the mole for biopsy
  • Scans if it may have spread

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Histology reports, including Breslow thickness
  • Photos of moles over time
  • Scan reports
  • Dermatology and oncology letters

Questions to ask your doctor

  • What stage is the melanoma?
  • How often should my skin be checked?
  • Do I need further treatment or scans?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • A mole that is changing quickly, bleeding or growing: get it checked as soon as possible

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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