Melanoma pictures to help identify skin cancer - Mayo Clinic
2023年12月16日 · Melanoma is a serious form of skin cancer. It often can be cured if found early. These melanoma pictures can help show you what to look for. 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.
Age spots (liver spots) - Symptoms & causes - Mayo Clinic
2022年2月11日 · Age spots are small, flat dark areas on the skin. They vary in size and usually appear on areas exposed to the sun, such as the face, hands, shoulders and arms. Age spots are also called sunspots, liver spots and solar lentigines.
Seborrheic keratosis - Symptoms & causes - Mayo Clinic
2022年1月18日 · Seborrheic keratoses are very common on the back. They appear as waxy light tan, brown or black growths that look as if they were dripped onto the skin by a candle. Some can grow large, more than 1 inch (2.5 centimeters) across.
Actinic keratosis - Symptoms & causes - Mayo Clinic
2022年12月17日 · Actinic keratoses are scaly spots or patches on the top layer of skin. With time they may become hard with a wartlike surface. Also known as a solar keratosis, an actinic keratosis grows slowly and usually first appears in people over 40.
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 during childhood and the teenage years. How these moles look may change over time. They also may fade over time.
Itchy skin (pruritus) - Symptoms and causes - Mayo Clinic
2024年10月23日 · Itchy skin can affect small areas, such as the scalp, an arm or a leg. Or it can cover the whole body. Itchy skin can occur without any other noticeable changes on the skin. Or it may come with: Inflamed skin; Scratch marks; Bumps, spots or blisters; Dry, cracked skin; Leathery or scaly patches; Sometimes itchiness lasts a long time and can be ...
Melanoma - Symptoms and causes - Mayo Clinic
2023年12月30日 · In people with brown and Black skin, typical moles are more likely to be dark brown or black. Typical moles have a distinct border separating the mole from the surrounding skin. They're oval or round and usually smaller than 1/4 inch (about 6 millimeters) in diameter.
Eye melanoma - Symptoms and causes - Mayo Clinic
2022年8月9日 · A growing dark spot on the iris; A change in the shape of the dark circle (pupil) at the center of your eye; Poor or blurry vision in one eye; Loss of peripheral vision; When to see a doctor. Make an appointment with your doctor if you have any signs or symptoms that worry you.
Age spots (liver spots) - Diagnosis & treatment - Mayo Clinic
2022年2月11日 · Learn more about the harmless dark spots on your skin that tend to appear as you age, especially in areas exposed to the sun. Treatment is available.
Common warts - Symptoms and causes - Mayo Clinic
2024年5月16日 · Common warts are small, grainy skin growths that occur most often on the fingers or hands. They're rough to the touch and often have tiny black dots. These dots are clotted blood vessels. Common warts are caused by a virus and are transmitted by touch. It can take 2 to 6 months for a wart to develop.