There is a theory in China about physiognomy, especially that moles have different meanings depending on where they appear on the face. Is it good for a woman to have a mole on the right side of her nose? In addition to analyzing from the perspective of physiognomy, the key is that we must correctly understand moles. You can’t trust everything about a person’s face, but there is definitely nothing wrong with understanding moles scientifically. Let’s take a closer look at the introduction to moles. Moles can be divided into broad and narrow meanings. The broad meaning includes various congenital and acquired melanocytic nevi, sebaceous nevi, etc. The term "mole" in medicine is used in a narrow sense, also known as nevus cell nevus, pigmented nevus, melanocytic nevus or common acquired melanocytic nevus, and does not include congenital melanocytic nevus. Mole is the most common benign skin tumor in humans. It is a skin manifestation caused by an increase in melanocytes in the epidermis and dermis. Depending on the location of nevus cells in the skin, they can be divided into junctional nevus, mixed nevus and intradermal nevus. Flat lesions suggest junctional nevi, slightly elevated lesions are mostly compound nevi, while papillomatous lesions and almost all hemispherical and pedunculated lesions are intradermal nevi. Causes It can be caused by many reasons and there is no definitive answer yet. It is generally believed that the occurrence of moles is related to genetic factors and environmental factors, mainly ultraviolet rays. Clinical manifestations It usually starts to appear after the age of two. It can occur on the skin and mucous membranes of any part of the body. The lesions are flat or slightly raised macules or maculopapules, which may also be hemispherical, papilloma-like or pedunculated, with a smooth surface, with or without hair, and may be single, a few to dozens in number. Due to the different types and contents of pigments in nevus cells, skin lesions may appear brown, bluish black or black, while non-pigmented lesions are mostly skin-colored. Depending on the location of nevus cells in the skin, they can be divided into junctional nevus, mixed nevus and intradermal nevus. Flat lesions suggest junctional nevi, slightly elevated lesions are mostly compound nevi, while papillomatous lesions and almost all hemispherical and pedunculated lesions are intradermal nevi. The disease progresses slowly and is often asymptomatic. Moles with atypical appearance may become malignant, such as very dark moles, uneven pigmentation, uneven or irregular edges, unclear boundaries, left-right asymmetry, and statistically larger than 5 mm in diameter. Moles located in the nail grooves and nails, extremities, oral mucosa, conjunctiva, vagina, and foreskin are more likely to become malignant melanomas than moles located in other places. |
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