Melanoma, explained plainly

Melanoma is a cancer that starts in melanocytes, the cells that make the pigment responsible for much of the skin's color. Most melanomas begin in the skin, although melanocytes also occur in the eyes and other parts of the body. The American Cancer Society's melanoma overview explains the disease and the different places it can begin.

A straw hat and sunglasses on a wooden table in dappled shade

Melanoma differs from the more common basal cell and squamous cell skin cancers. The National Cancer Institute's skin cancer patient page explains that melanoma is less common but more likely to grow into nearby tissue and spread elsewhere. A general description cannot tell someone what a particular spot is, what a diagnosis means for them, or which treatment belongs in their care.

Noticing change without trying to diagnose it

A changing spot can raise questions that deserve a doctor's attention. The American Academy of Dermatology's melanoma pages describe ways to notice warning signs and explain why finding melanoma early matters. Their information includes checking the skin and nails, recognizing changes, and the close examination a dermatologist may carry out. Here, the self-exam page explains those ideas with words and a warning-sign table.

Looking at skin is a way to notice something worth showing a doctor. It cannot establish that a spot is harmless or confirm that it is melanoma. The same limit applies to a remembered rule or a photograph. This reference offers no photographs of skin disease and does not compare a reader's skin with pictures. Questions about a new or changing area belong with a doctor or dermatologist.

Finding a starting point

A person wondering about a spot may want to begin with skin checks and the basics. A family member reading a diagnosis letter may want explanations of a biopsy, the pathology report, or staging. Someone returning to ordinary routines after treatment may want to understand follow-up care or read about feelings, activity, and the cost of care. The page groups below make these subjects easier to find without treating them as a sequence everyone must follow.

Each topic has a different purpose. A definition explains a word. A page about a test explains what an agency says that test is used for. A stage page describes a classification and the categories of treatment agencies discuss. A research summary explains what a study examined and reported. None of these can substitute for the details of a person's own medical record or a conversation with the team providing care.

The MedlinePlus melanoma topic brings together information on diagnosis, prevention, treatment, living with melanoma, and research. Its organization reflects how many different questions can sit under the same disease name. This reference takes a similarly broad view of the subjects a reader may need, while keeping individual pages focused on a clear topic.

Reading at a comfortable pace

Technical words are explained where they first appear and can be followed to the glossary. The glossary is also useful when a word occurs in a letter but the surrounding sentence is hard to follow. Definitions describe general meanings; they do not interpret a finding in a person's report. A care team can explain how that finding fits with the rest of the information they have.

Longer pages have a contents list. Many start with key points and some close with questions that a reader might bring to their own care team. These questions are examples of topics for discussion, rather than requests for a particular test or treatment. It is fine to read only the section that answers an immediate question and return to another subject later.

There are also pages for readers who want to understand sun safety without having a diagnosis. They explain ultraviolet light, the UV Index, sunscreen labels, clothing labels, and shade as public health agencies describe them. The skin-science page offers a general introduction to the skin's layers, pigment cells, supporting tissue, and ordinary repair processes. It is written for any curious reader.

Sources and limits

Melanoma International is an independent, plain-language reference for patients and families. Its pages draw on public health agencies, cancer and dermatology societies, and published research. Citations appear beside the information they support, with the source named so that readers can follow the fuller explanation. The annotated reading guide describes what each source covers before a reader leaves this reference.

Public information applies to topics and groups of people. An individual question can involve findings, circumstances, and preferences that are absent from a general page. Your own doctor or care team is the right source for questions about your skin, diagnosis, or treatment. The About page explains the reference's independence and its limits in more detail.

Understanding melanoma

After a diagnosis

Treatment & trials

Sun safety

Care & support

Resources