Moles - Symptoms and causes - Mayo Clinic
2023年12月15日 · 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. Most people have 10 to 45 moles that appear …
Moles - Diagnosis and treatment - Mayo Clinic
2023年12月15日 · Moles, also known as nevi, are a common type of skin growth that vary in color, shape and size. While most moles are most often harmless, they rarely can become cancerous.
Seborrheic keratosis - Symptoms & causes - Mayo Clinic
2022年1月18日 · A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous (benign) skin growth. People tend to get more of them as they get older. Seborrheic keratoses are usually brown, black or light tan. The growths (lesions) look waxy or scaly and slightly raised.
Melanoma pictures to help identify skin cancer - Mayo Clinic
2023年12月16日 · The American Academy of Dermatology advises watching skin spots for: Asymmetry. Border irregularity. Color changes. Diameter greater than 1/4 inch (about 6 millimeters). Evolving. Follow the guide above, called the ABCDE guide, to see if a mole or spot on the skin might be melanoma.
Melanoma - Symptoms and causes - Mayo Clinic
2023年12月30日 · 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 increases the risk of melanoma.
Seborrheic keratosis - Diagnosis & treatment - Mayo Clinic
2022年1月18日 · Diagnosis. Your doctor can usually tell whether you have a seborrheic keratosis by looking at the affected skin. If there is a question about the diagnosis, your doctor might recommend removing the growth so that it can be examined under a microscope.
Skin cancer - Diagnosis and treatment - Mayo Clinic
2022年12月6日 · Learn about skin cancer, including basal cell carcinoma, melanoma and squamous cell carcinoma. Find out about symptoms, treatments and ways to lower your risk. This content does not have an English version.
Epidermoid cysts - Symptoms and causes - Mayo Clinic
2024年3月27日 · Epidermoid cyst signs and symptoms include: A small, round bump under the skin, often on the face, neck or trunk. A tiny blackhead plugging the central opening of the cyst. A thick, smelly, cheesy substance that leaks from the cyst. An inflamed or infected bump.
Types of birthmarks (birthmark pictures) - Mayo Clinic
2024年1月25日 · Learn to identify types of birthmarks by how the skin looks. Examples include café au lait spot, congenital nevus, port-wine stain and hemangioma.
Benign peripheral nerve tumor - Symptoms and causes
2022年10月19日 · A benign peripheral nerve tumor can cause symptoms if it presses on the nerve in which it is growing or on nearby nerves, blood vessels or tissues. As the tumor grows, it may be more likely to cause symptoms, but even small tumors can sometimes cause symptoms.