What are the common types of spots? Pictures

1. Freckles

Freckles are mostly hereditary spots, which usually appear when they are 3 to 5 years old. They are usually more common in women. As they age, their faces There will be more and more spots on the skin, and they will become more and more obvious. They are generally distributed on the nose and cheeks. The spots are light brown or dark brown, ranging from the size of a pillow to the size of a mung bean. The main shape is round, oval or irregular. Spread over face.

2. Chloasma

The appearance of chloasma is mostly related to the body’s endocrine system, especially to women’s magnetic hormone levels. Therefore, irregular menstruation, taking birth control pills, Liver function or chronic kidney disease can cause the appearance of chloasma, and ultraviolet rays and mental stress can also aggravate the color of chloasma. Chloasma generally appears as large pale yellow spots.

3. Coffee spots

Coffee spots are also called coffee milk spots. They are light brown patches that can be seen from the moment a baby is born. The color of coffee spots changes from Varying from light brown to dark brown.

However, the color of each coffee spot is very uniform. The color of coffee spots is not affected by any foreign objects. The size ranges from a few millimeters to tens of centimeters, and the boundaries are also very clear. When observed under a microscope , its performance is very similar to freckles, mainly manifested by an abnormal increase in the amount of melanin in the epidermis.

4. Nevus of Ota

Nevus of Ota may be related to heredity and is an autosomal dominant inheritance. During embryonic development, when melanocytes migrate from the neural crest to the epidermis, due to a certain This is a lesion formed by failing to pass through the junction of the epidermis and dermis and staying in the dermis. Some studies believe that it may not be the remnants of melanocytes, but a hamartoma or nevus-like lesion similar to blue nevus.

5. Brown nevus

Brown nevus is a congenital non-hereditary skin pigment disease. Because it is often distributed on the cheekbones of the face, it is also called Zygomatic bone mother spots, while the pigment of brown-blue nevus is deposited in the dermis layer of the skin, so it also has the name of dermal spots. This type of spots is similar to freckles, and they all have a family history.

The earlier the dermal spots are treated, the better, because the younger they are, the better they are absorbed and the less pigment particles are deposited, the better the treatment effect. In addition, the area is small in the early stage, and becomes larger in adulthood, and the pigment color becomes darker, which increases the difficulty and cost of treatment.

6. Sunspots

Sunspots, as the name suggests, are caused by excessive exposure to the sun, which causes an increase in melanin pigments in the basal layer of the skin and gradually accumulates on the skin surface. Most sunspots They are divided into planar or lumpy shapes and are distributed irregularly on the face, and are yellowish-brown or brown in color.

7. Age spots

As age increases, the body’s metabolism slows down, so most elderly people will have pigment deposition on their faces or bodies. This is what we often say. Age spots. Extended information

Causes of pigmented spots

1. External factors: epidermal irritation (such as inappropriate whitening treatments, inferior cosmetics, etc.), ultraviolet radiation, massage, acne marks wait.

2. Internal factors of the body: hormonal imbalance, taking drugs (such as birth control pills, etc.), pregnancy, mental stress, etc.

1. Bad living habits. Another reason for the formation of pigment spots is bad living habits, such as stress, picky eating, lack of sleep, etc. Therefore, people whose sleeping hours are unstable also have poor skin metabolism, which directly affects the production of melanin.

2. Endocrine disorders. Melanin production is affected by changes in sex hormone levels in the body during menstruation and pregnancy. In addition, endocrine instability often leads to emotional instability and can also indirectly cause the formation of pigment spots (in traditional Chinese medicine, the formation of chloasma is mainly attributed to liver stasis, which is more complicated).

3. Strong ultraviolet radiation. Do you know why women need sun protection? This is because ultraviolet radiation in the sun is an important cause of the formation of pigment spots. When the skin receives too much sunlight, the epidermis will produce more melanin particles. This tissue can absorb ultraviolet rays and protect the body from damage.

This is why everyone’s skin will turn darker after being exposed to the sun. Moreover, ultraviolet radiation can cause chloasma and deepen the color of ordinary freckles.

4. Autosomal inheritance. Symptoms mostly begin in children around 5 years old, mostly in women, and are severe in spring and summer and mild in autumn and winter. Spots ranging from light brown to yellowish-brown pintips to the size of rice grains are responsible for the formation of pigment spots.

Reference materials? Baidu Encyclopedia-Pigmented Spots