Dec 15, 2023 · Moles, also known as nevi, are a common type of skin growth. They often appear as small, dark brown spots that are caused by clusters of pigment-forming cells called melanocytes.

Dec 15, 2023 · If you have a mole that concerns you, your healthcare professional typically can let you know if it's normal or needs to be studied more. Your healthcare professional may send you to a …

Dec 30, 2023 · Having many moles or moles that aren't typical. Having more than 50 typical moles on your body indicates an increased risk of melanoma. Also, having a type of mole that isn't typical …

Aug 6, 2020 · Moles are caused when cells in the skin (melanocytes) grow in clusters or clumps. Melanocytes are distributed throughout your skin and produce melanin, the natural pigment that …

Nov 13, 2023 · Learning about moles and other skin lesions — areas of skin that look different from the rest of your skin — can help you recognize the signs of skin cancers, including melanoma. What …

Dec 23, 2025 · In some cases, the mole that causes the molar pregnancy goes deep into the middle layer of the uterine wall. This causes bleeding from the vagina. Persistent GTN is usually treated with …

Jan 18, 2022 · Experts don't completely understand what causes a seborrheic keratosis. This type of skin growth does tend to run in families, so there is likely an inherited tendency.

Oct 18, 2021 · These include benign conditions such as moles, warts and seborrheic keratoses, as well as malignant skin cancers, including melanomas. Also, in rare cases, development of multiple skin …

Dec 23, 2025 · Follow the guide above, called the ABCDE guide, to see if a mole or spot on the skin might be melanoma.

Jan 28, 2025 · A condition called dysplastic nevus syndrome, which causes unusual moles, can raise the risk of eye melanoma. People who have a condition called ocular melanocytosis also are at …