White spot on the child's face

If you find a white spot on your child's face, you should pay attention to it. After all, it may be caused by vitiligo. You should do skin examinations in time. If you observe carefully, you will find that the color of your child's skin has become darker. The most important thing is that the cause of the disease is not so clear, but some children can relieve it on their own, so there is no need to be too nervous.

1. Sometimes, white spots will appear here and there on a child's face. The edges of the spots are irregular and there are some fine dandruff on them. The color of the surrounding skin is slightly darker than normal skin. This is medically called "simple pityriasis" or "white pityriasis."

2. The cause of the disease is unknown. It may be due to factors such as wind, sun, irritation from soap or facial cosmetics, infection from certain bacteria, or nutritional imbalance. This type of white pityriasis will disappear naturally, so parents don’t need to worry.

b. Segmental type (unilateral type): white spots appear along the skin area of ​​a certain cutaneous nerve segment, generally unilaterally distributed, more common in children, and often related to neurochemical factors; nearly half of patients with segmental vitiligo develop white hair, usually involving the hair and eyebrows. Gray hair means the destruction of hair follicle melanocytes, so segmental vitiligo responds poorly to drug repigmentation treatment;

c. Generalized type: Most people's white spots are located in different parts of the body and are usually symmetrical. It is often caused by the above two types of development. In addition to white spots, many people's hair, eyelashes and beards will also turn white. In rare cases, the white spots can affect the retina and cause the eyes to lose color. In daily life, many people do not fully understand the difference between vitiligo and white spots. Due to the misunderstanding of vitiligo and white spots, their health may be affected to a certain extent.

The formation process of white spots

Leukoplakia can be congenital or acquired. Congenital leukoplakia may be caused by various reasons during embryonic development. Generally, white patches appear on the skin at birth or shortly after birth, such as achromic nevus, anemic nevus, achromic incontinence pigmenti, etc. The distribution of these white spots is generally limited or has certain characteristics, and the color of the white spots will not be very white. As the skin grows and develops, these white spots will neither fade nor expand significantly after stabilizing. There are many causes of acquired vitiligo. Since the skin is in direct contact with the external environment, the appearance of white spots on the skin may be caused by both internal reasons and external environmental factors, such as sun exposure, chemicals, fungal infections, etc. There are many skin diseases that can cause skin hypopigmentation or depigmentation. Some inflammatory skin diseases can cause white spots on local parts of the skin. These white spots usually occur before other inflammatory skin diseases, such as eczema and psoriasis, which destroy the melanocytes in the basal layer of the skin and cause skin depigmentation.