
Melanoma is a type of cancer that happens when the cells that produce color (melanin) grow out of control.
Women ages 50–65 have higher rates of melanoma than men of the same age.
Melanomas of the Skin
Called cutaneous melanomas, melanomas of the skin are the most common.
There are several different types:
Superficial Spreading Melanoma
Grows on the surface of the skin
Shows up as a dark spot or new or existing mole
Makes up 7 out of 10 skin melanomas
Nodular Melanoma
Grows down into the deep layers of the skin
Shows up as a bump on the skin that can be brown, black, red or pink
Makes up 2 out of 10 skin melanomas
Lentigo Maligna Melanoma
More common in older adults
Grows slowly
Shows up as an abnormally shaped brown or tan spot in a sun-exposed part of the skin
Acral Lentiginous Melanoma (Acral Melanoma)
More common in people with darker skin
Grows in areas not typically exposed to the sun
Shows up as a dark spot on places like:
Palms
Bottom of the feet
Under the nails
Rare Types of Cutaneous Melanoma
Amelanotic melanoma (pink or red spot)
Nevoid melanoma (dome-shaped mole of any color)
Spitzoid melanoma (round, pink mole that can sometimes be flat or rough)
Desmoplastic melanoma (pink or red spot that looks like a scar)
Melanomas in Other Parts of the Body
Uveal Melanomas
Grows in the pigmented part of the eye
Often has no symptoms but can cause:
Vision loss
Light flashes
Blurry vision
Floaters
Mucosal Melanomas
Grows in moist parts of the body:
Nose
Mouth
Throat
Vagina
Anus
Symptoms vary based on the location but often include bleeding from or pain in the affected part
This educational resource was created with support from Merck.