What are the types of moles

Everyone is familiar with the moles on the body, but what you may not know is that moles are also classified, and different types have different dangers. So what are the types of moles? There are many types of moles, including junctional moles, internal moles, hairy moles and ordinary moles. Generally, moles are not dangerous and will accompany a person throughout his life. However, if lesions occur, medical treatment should be sought in time to eliminate them.

1. What are the types of moles?

1. Junctional nevus

The spots are brown in varying shades and range in diameter from a few millimeters to a few centimeters. Generally smooth and hairless, but may be slightly raised. It can occur anywhere in the body. Moles on the palms, soles and genitals often belong to this category, without any gender distinction.

2. Intradermal nevus

It is the most common type of pigmented nevus in adults. Can occur anywhere but is most common in the head and neck

The lesions range from a few millimeters to several centimeters in size, have regular edges, and are different shades of brown. There may be hair on the surface, which is coarser than normal. Intradermal nevus appears as hairy nevus and is often found on the scalp, face and neck of adults. Its diameter is generally less than 1 cm. The lesions are hemispherical, but can also be papilloma-like or pedunculated. Intradermal nevi generally do not increase in size.

3. Mixed moles

It is similar in appearance to a junctional nevus but may be higher up.

4. Hairy mole

Hairy nevi are particularly unsightly. They are partially black, have a rough and even raised surface, and are covered with hard, short hairs, which often attract special attention.

5. Mole

Moles are pigmented patches on the skin. It consists of nevus-like cells deep in the dermis that contain melanosomes. Black moles are very common, almost everyone has one, and most people have more than one.

How are moles formed?

Intradermal moles are formed by differentiation of large mole cells. They are more similar to mature small mole cells and have entered the dermis. Junctional nevus cells exist at the junction of the epidermis and dermis, in the form of multiple nests with clear boundaries and uniform distribution; the upper half of each nest is in the bottom layer of the epidermis, and the lower half is in the superficial layer of the dermis. These nevus cells are large and darkly pigmented. In the process of nevus cells entering the dermis, compound nevus often produces intradermal nevus and residual junctional nevus at the same time, which is a mixed form of the above-mentioned vehicle-type nevus. Compound nevi are formed by increased secretion of melanin by melanocytes in the skin.