How many types of Seborrheic Keratosis are there?

Seborrheic Keratosis is a non-cancerous growth that appears as small, wart-like bumps that protrude from the skin. They usually appear on the face, chest, shoulders, and back. They are painless and do not require treatment, except in cases where cosmetic concerns are present. Are common in middle-aged and older people.

The sieve can be divid into 4 types according to their different characteristics, namely:

1. It appears as smooth spots or patches, brown or black in color with clear edges, measuring 0.3-2 centimeters. It is often on the face, เล่นบาคาร่า UFABET เว็บตรง ค่าคอมสูง, arms, legs, or areas that are frequently expose to sunlight. It tends to occur more in people with fair skin than in people with dark skin, and is more common in people who are quite old.
2. Freckles are easier to treat than other types of freckles. They appear as small brown spots caused by abnormal functioning of pigment cells under the skin, making them more sensitive to sunlight. They are often on both cheekbones, the nose, or areas that are heavily expose to the sun. The cause of abnormal functioning of pigment cells is usually genetics, and combined with regular exposure to sunlight without proper protection, causing freckles to become darker and larger in number.
3. Are a skin problem that many people worry about because they are visible abnormalities on the face and body. Skin spots usually appear in the form of small brown or black spots. Which are cause by the accumulation of excessive melanin. If left untreated, skin spots can spread to other areas on the face and body.
4. It has the appearance of small spots, dots or patches similar to freckles, but is darker in color, such as dark brown, and has unclear edges, making it harder to treat. This type of freckles is caused by an abnormality of pigment cells in the dermis. Which will gradually become darker if stimulated by sunlight. It is often on the cheekbones, temples, and nose. This type of freckles is usually present from birth and becomes clearer when stimulated by UV rays or increased hormones during adolescence, pregnancy, and older age.