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Doctor insights on: Can Melanoma Look Like A Bruise

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Can a melanoma look like a bruise?

Can a melanoma look like a bruise?

Yes: Melanoma can have a variety of appearances. A bruise that appears with no trauma and doe not get better over a 3/4 week period should be evaluated by a dermatologist or your internist.

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Dr. Mike Bowman
955 Doctors shared insights

Skin Cancer (Definition)

A condition in which some element of your skin--which is one of the most complex organs in the body--degenerates into cancer. The three most common types of skin cancer are: basal cell, squamous cell, and melanoma which occur in that order and degree of aggressiveness. Although heredity plays a major role, sun exposure and tobacco use and ...Read more


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I have a bruise. I don't know how I got it, but I've had it for more than a month and it still hasn't healed. Could it be melanoma?

I have a bruise. I don't know how I got it, but I've had it for more than a month and it still hasn't healed. Could it be melanoma?

Probably not: Bruise is from some trauma or pressure injury and rupture of capillaries. It fades definitely in month. If there is a new skin discoloration of 1 month duration not itchy, rapidly spreading in size get it checked with your doctor. If same size with clear outline= may continue to monitor for 6 months. If there is family History of skin cancer and especially Melanoma yes get it checked.

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I have a bruise on my thigh. I don't know how I got it, but it's been there for at least two weeks, and it still hasn't healed. Could it be melanoma?

I have a bruise on my thigh. I don't know how I got it, but it's been there for at least two weeks, and it still hasn't healed. Could it be melanoma?

Take a look: A bruise begins purple and often tender, then EVOLVES slowly through green and yellow, then is gone after a few weeks. A melanoma is usually (not always) black, evolves much more slowly. A melanoma may expand in a very erratic way. A 2-week bruise is not much like a melanoma. If it slowly fades, forget it.

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Can Melanoma appear as a 1 inch irregular diameter blue/grey bruise? On the upper outside arm?

Can Melanoma appear as a 1 inch irregular diameter blue/grey bruise? On the upper outside arm?

Melanoma/bruise: Melanoma can appear anywhere. The color is usually dark brown/black and irregular. Melanomas can be flat or a bump but don't usually have a bruise unless there has been trauma to the area on top of it. A bruise is caused by bleeding under the skin. A bruise can become dark, but eventually becomes lighter, green and then yellow. It will go away. If the lesion bleeds or gets larger, see a doc

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Yellowish bruise like mark that appeared out of nowhere. Could it be melanoma? Also have axillary mass that looks black through skin for 5 mos.

Yellowish bruise like mark that appeared out of nowhere. Could it be melanoma? Also have axillary mass that looks black through skin for 5 mos.

Bruise: Sometimes a bruise is a bruise and will fade over a few weeks. Other times an area undergoing color changed could be cancerous. An axillary mass could be a cyst, an enlarged lymph node or even a skin cancer to name a few possibilities. . In any case, have a dermatologist evaluate any suspicious area.

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Is toenail melanoma on the nail bed, or within the nail? I had a bruise like spot (no trauma) appear, but was able to cut about half of it off.

Is toenail melanoma on the nail bed, or within the nail? I had a bruise like spot (no trauma) appear, but was able to cut about half of it off.

A streak: It appears as a dark streak in the direction the nail goes. If you have a concerning lesion under your toenail you should see your friendly dermatologist.

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I went for a pedicure &discovered black and blue marks under each of my big toes. It doesn't hurt. Is this bruising or melanoma? Pic in health file.

I went for a pedicure &discovered black and blue marks under each of my big toes. It doesn't hurt. Is this bruising or melanoma? Pic in health file.

Chances are: Those black and blue marks are dried blood, the result of nicking your skin during the pedicure and the blood being trapped under the nail. While melanoma is on the rise and can present as a black discoloration, it's under one nail, not multiple ones. The blackness should grown out with the nail slowly over time or even fade. If it's not or you develop pain or drainage, bring your toes to a doctor.

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I have hard, non-mobile, non-tender, lymph nodes under my neck for 2 months and a history of melanoma. Should I be worried?

I have hard, non-mobile, non-tender, lymph nodes under my neck for 2 months and a history of melanoma. Should I be worried?

Yes: Depending on where your melanoma was located and what prior treatment you received, your current lymphadenopathy may or may not be related to your history. Nevertheless, additional work-up and biopsy (by fine needle aspiration or core biopsy) may be recommended for definitive characterization.

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Can melonoma appear suddenly and look like a tiny bruise?

Can melonoma appear suddenly and look like a tiny bruise?

Melanoma: Any suspicious lesion even if it appears suddenly will need to be biopsied to exclude malignancy.

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Is a freckle that hurts / feels like a bruise a sign of skin cancer?

Is a freckle that hurts / feels like a bruise a sign of skin cancer?

Hard to say: It's impossible to say yes or no based on that description alone. What you describe is unusual enough that you should have a thorough skin examination with a special focus on the area you mentioned.

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The patch of skin on my arm looks like a bruise. Is it skin cancer?

The patch of skin on my arm looks like a bruise. Is it skin cancer?

Have the lesion: Evaluated by a dermatologist. I encourage my patients to see their dermatologist annually for a head to toe evaluation.

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I'm 18 & I have had eczema all my life & I've noticed that n certain parts of my body where I have a rash it looks like a bruise. Can it be skin cancer?

I'm 18 & I have had eczema all my life & I've noticed that n certain parts of my body where I have a rash it looks like a bruise. Can it be skin cancer?

Eczema is quite: Difficult to treat. If it were me I'd try eliminating all dyes and fragrances from my life and/or try eating wheat free. Skin cancer is extremely uncommon at 18 but not impossible. Does it look like a bruise or on closer inspection, or is it more brownish? Sometimes areas that have been inflamed (eczema) turn brown afterwards. If you have a family history of melanoma, see MD. O/w no diagnosis

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I have a bruise like blotch that seems to be under my skin, it appeared over night on the top of my breast, what are the symptoms of skin cancer etc?

Probably not cancer: Skin cancer is rare in someone 23 years old. I wouldn't worry about it. The symptoms of skin cancer are change in or development of a mole or skin nodule that is raised or flat, asymmetric, discolored, and that grows in size. Your symptoms should go away on their own within a few days.

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I have a very light blue/purple/gray spot on my leg. It is very small. I thought it was a bruise but it does not hurt. Could it be skin cancer?

I have a very light blue/purple/gray spot on my leg. It is very small. I thought it was a bruise but it does not hurt. Could it be skin cancer?

See your derm: While skin cancer in a 21 year old is rare, it does occur occasionally. Any new skin lesion or one that is changing should be brought to the attention of your dermatologist. And remember to protect your skin. Wear sunscreen with an SPF of at least 30 and try to cover up as much as possible when outdoors for prolonged periods of time.

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Bruise Or Contusion (Definition)

Bruises, or ecchymoses, are discolorations and tenderness of the skin or mucous membranes due to the leakage of blood from an injured blood vessel into the surrounding tissues. A serious disease called pupura presents as a cluster of small bruises called petachia. Petachia often appears as many tiny red dots clustered together, and could indicate a problem. ...Read more


Dr. Travis Kidner
2,631 Doctors shared insights

Melanoma (Definition)

Cancer of the melanocyte cells. Melanocyte cells determine the color of your skin. Although these cells are primarily found in your skin, they can also be found in the bowel ...Read more