Continue reading to learn how a cancer rash looks.

what cancers can cause itching, and if leukemia rash comes and goes.

Instead, they cause a sore that doesnt heal or go away.

Woman with rash on chest

Tatsiana Volkava / Getty Images

They oftenbut not alwayshave visible blood vessels.

At first, the spot may resemble psoriasis, dermatitis, or eczema.

As the cancer progresses, the spot may ooze or bleed.

Marisa Garshick

Anytime you have an area on your skin that is changing shape, you should see a healthcare provider.

Skin cancer can take on a variety of appearances, and its best to get a professional opinion.

Early detection is extremely important for treating skin cancer, so when in doubt, see a healthcare provider.

Petechiae are tiny spots that appear red, purple, or brown.

Leukemia petechiae often resembles atopic dermatitis, a common skin rash.

However, it is not typically itchy.

Although its not always a sign of cancer, it can be a sign of other serious illnesses.

Should You Have a Provider Examine Your Rash?

In most cases rashes will resolve on their own.

In some cases, they can indicate an allergy or an ongoing autoimmune condition like psoriasis or eczema.

In others, they may indicate cancer.

In many cases,treatments for itchy skinmay help.

Talk with your team, and ask them questions about your long-term health.

Remember, although cancer is a less common cause of a skin rash, early treatment is very important.

If youre concerned about a cancer-related skin rash, call your healthcare provider.

Summary

A rash that doesnt heal or go away can be a sign of cancer.

Skin cancer causes painful ulcers or growths that may be mistaken for psoriasis or eczema.

These rashes are often in one spot.

Anytime you have a rash that doesnt go away after four weeks, see your healthcare provider.

Early detection is very important for treating cancer and achieving the best possible prognosis.

American Cancer Society.Skin cancer image gallery.

Moffitt Cancer Center.Can rashes be a sign of cancer?Nov.

Moffitt Cancer Center.Symptoms of Leukemia.

Stanford Medicine.Mycosis fungoides: A rash that can be cancer.

National Organization for Rare Disorders.Mycosis fungoides.

Cancer Research UK.Skin cancer symptoms.

Twycross R, Greaves MW, Handwerker H, et al.Itch: Scratching more than the surface.QJM.

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