WebCommon benign skin lesions of melanocytic origin include the ephilis, lentigo simplex, and melanocytic naevus (mole). Ephilides are genetically determined well-defined small brown macules with the following characteristics: 1–4 mm in diameter. Tan or brown colour. Located in areas exposed to the sun such as the face and forearms. WebBrown spots and freckles on sun- exposed skin are ephelides (the plural of ephelis) and lentigines (the plural of lentigo ). The difference between an ephelis and a lentigo is that an ephelis fades during the winter months while a lentigo persists in the absence of ultraviolet ( UV) stimulation. Ephelides and lentigines can occur in the same ...
20 Types of Skin Lesions: Causes and Appearance - Verywell Health
WebMalignant melanoma also requires excision with a margin of at least 5 mm, and many dermatologists recommend a 2-cm margin. All other pigmented lesions that occur in these patients should be ... 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. They appear gradually, usually on the … See more A seborrheic keratosis grows gradually. Signs and symptoms might include: 1. A round or oval-shaped waxy or rough bump, typically on … See more 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. If you've had one seborrheic keratosis, you're at risk of … See more The peak time for developing seborrheic keratoses is after your 50s. You're also more likely to have them if you have a family history of the condition. See more north county communty colloge
Seborrheic keratosis - Symptoms and causes - Mayo Clinic
WebOct 1, 2024 · Like superficial spreading melanoma, lentigo maligna grows more slowly across the top layer of skin, looking like a flat or slightly raised tan, brown, or dark-brown patch. It is the most commonly ... WebFeb 18, 2024 · Overview. Moles (nevi) are a common type of skin growth. They often appear as small, dark brown spots and are caused by clusters of pigment-forming cells (melanocytes). Most people have 10 to 40 … north county correctional facility news