Skip to main content

Signs and Symptoms of Melanoma

3 min read

By Emily Lockhart

Medically Reviewed by Dr. Jenny Liu, MD

Skin cancer is one of the most common cancers. According to the American Cancer Society, Melanoma accounts for about 1-percent of skin cancers, but is responsible for a large number of skin cancer deaths. The estimates for melanoma in the U.S. for 2020 are about 100,350 new melanomas will be diagnosed and about 6,850 people are expected to die of melanoma.

Melanoma is cancer of the pigment producing cells in our skin, eyes, and hair. It can be fatal as unlike the common skin cancers, such as basal cell or squamous cell skin cancer, melanoma are more likely to spread (or metastasize) to other areas of the body — such as the blood vessels or lymphatic system. Melanoma usually presents as atypical mole, but if left untreated will metastasize and cause systemic symptoms, including these 6…

Changes in Skin Shape, Color or Texture

In the earliest stages, melanomas tend to appear as a new skin growth that alters the shape, color, or texture of unblemished skin (i.e., a bruise-like mark or wart that won’t heal or a dark streak under a toenail). These changes can take place quickly within weeks or gradually change over months.

Transforms Existing Moles

Melanomas can also impact the shape, color, or size of an existing mole or birthmark. Typically, a melanoma will appear on the upper back if you are male or on the legs if you are female. However, the body can grow a melanoma on the fingernail and toenail beds, on the soles of the feet, palms, face, scalp, neck, and in some rare instances within the ears, mouth, rectum, eyes, or genital mucosa.

Irritation and Bleeding

Bleeding, tener, and non healing sores on the skin can suggest skin cancer. Although these are more commonly seen with non-melanoma skin cancer, any irritation or bleeding spot should be evaluated by a dermatologist.

ABCDE System of Identification

ABCDE is a 5-point identification system used to help identify changes in potentially dangerous moles and skin growths. It stands for:

  1. Asymmetry—lack of mirror image of the other side
  2. Border—irregular or blurred edges
  3. Color—variations in color such as different shades of brown, red, grey, and blue
  4. Diameter—calls into question moles larger in size than a standard pencil eraser or 6-mm
  5. Evolution—any aggressive changes in size, shape, surface, color, and discomfort of a mole or skin growth

Swollen Lymph Nodes

Rarely melanoma can present initially as a metastatic lymph node with no obvious skin findings. Lymph nodes greater than 1-cm in size that persist for more than three months with no obvious history of infection or skin conditions should be brought to the attention of your doctor immediately.

Common Risk Factors

Even though a melanoma is difficult to predetermine, the following common risk factors are considered major melanoma influencers:

MD, Board-Certified Dermatologist and Assistant Professor of Dermatology

Dr. Jenny Liu is a board-certified dermatologist and an assistant professor in the Twin Cities. Her academic interests are complex medical dermatology, ethnic dermatology and medical education. She uses her blog and Instagram (@derm.talk) to educate others on all things dermatology and share her own tips and tricks regarding skin care.

Your Health

Explore

Allergy-Proof Your Spring: Tips for Tackling Seasonal Allergies Before They Start
By Clarissa Vanner Your Health

Allergy-Proof Your Spring: Tips for Tackling Seasonal Allergies Before They Start

As spring approaches, so does the dreaded arrival of pollen, dust, and other common allergy triggers. Instead of waiting for symptoms to strike, take proactive steps to minimize exposure and keep sneezing, itching, and congestion at bay. A few simple changes can help allergy-proof your environment and make the season much more enjoyable. Start with […]

Read More about Allergy-Proof Your Spring: Tips for Tackling Seasonal Allergies Before They Start

3 min read

Seasonal Health Reset: How to Refresh Your Wellness Routine for Spring
By Clarissa Vanner Your Health

Seasonal Health Reset: How to Refresh Your Wellness Routine for Spring

As winter fades, spring offers the perfect opportunity to refresh your body and mind. Longer days and warmer weather invite more movement, fresh foods, and revitalizing self-care. A seasonal reset can help boost energy, strengthen immunity, and restore balance after months of cold-weather sluggishness. From clean eating and outdoor exercise to mindfulness and detox practices, […]

Read More about Seasonal Health Reset: How to Refresh Your Wellness Routine for Spring

4 min read

Adjusting to Daylight Saving: How to Prepare for the Time Change Without Losing Sleep
By Clarissa Vanner Your Health

Adjusting to Daylight Saving: How to Prepare for the Time Change Without Losing Sleep

As daylight saving time approaches, many of us struggle with adjusting to the time change, especially when it disrupts our sleep schedule. Losing an hour of sleep can leave us feeling groggy and out of sync, but with the right preparation, it doesn’t have to be a stressful transition. By making small adjustments to your […]

Read More about Adjusting to Daylight Saving: How to Prepare for the Time Change Without Losing Sleep

3 min read