Why do children have red birthmarks?

Birthmark is something that everyone is familiar with, because birthmark is very common in people's lives, and birthmark is often mentioned in film and television works. Birthmarks are congenital. Although many people think that birthmarks are nothing, there are still many people who hate birthmarks very much, because some birthmarks grow on the face, which will bring a very large shadow area to people. Red birthmarks are very common, but do you know why children have red birthmarks?

What causes red birthmarks in newborns?

Many experts are studying the causes of red birthmarks, but there is no final and definite result. The following content can only be used as a reference. Let’s take a look at the causes of red birthmarks in newborns.

1. Red birthmarks caused by genetics Generally speaking, red birthmarks have a higher incidence rate among Asian and Latin American ethnic groups. The survey results also found that more than 50% of patients with red birthmarks have the same family history, and the proportion of female patients with family history is even higher.

2. Red birthmarks formed by sun exposure. The ultraviolet rays in sunlight act as an exogenous stimulus to the division of melanocytes, which can cause the melanocytes in the irradiated area to proliferate and aggravate the pigmentation of the birthmark. Therefore, frequent exposure to sunlight can induce red birthmarks.

3. Red birthmarks formed during pregnancy After a woman becomes pregnant, the hormone levels in her body will change, which will increase the activity of melanocytes and increase the amount of melanin. Pigmentation often appears during early and mid-pregnancy and gradually worsens until full term. Moreover, for some patients, the red birthmark will persist after giving birth. However, the red birthmarks on the faces of most pregnant women are not obvious.

4. Red birthmarks caused by taking medications. Long-term oral contraceptives can also induce red birthmarks just like pregnancy. Generally, symptoms begin 1 to 20 months after taking the medication and gradually subside after stopping the medication. In addition, long-term use of drugs such as hibernation spirit, phenytoin sodium, and spironolactone can also induce red birthmarks.

5. Red birthmarks caused by chronic diseases Certain chronic diseases such as liver disease, chronic alcoholism, tuberculosis, visceral tumors, thyroid disease and some autoimmune diseases, especially female reproductive organ diseases and irregular menstruation, dysmenorrhea, adnexitis, infertility, etc. patients often have red birthmarks on their faces.

6. Red birthmarks caused by improper use of cosmetics. It is common that certain cosmetics can also cause red birthmarks. This may be related to certain ingredients in the cosmetics such as oxylinoleic acid, citronellal, salicylates, metals, preservatives and fragrances that directly stimulate the birthmarks or cause allergic reactions. Inferior cosmetics are more harmful.

7. Red birthmarks caused by dietary factors. In recent years, researchers have found that long-term lack of glutathione in the diet will increase the activity of tyrosinase in the birthmark, and then oxidize tyrosine into dopamine to form melanin, resulting in pigmentation and red birthmarks. Vitamin C, selenium and other substances can increase the glutathione content in the body, inhibit the oxidation of tyrosine, and thus inhibit the formation of red birthmarks.

Why do children have red birthmarks? Looking at the introduction above, we have learned that there are many reasons for birthmarks in children. Some of them are harmless to the body, but some are very harmful to people. Therefore, if people find that their baby has a red birthmark, it is best to go to a regular hospital for examination and try to eliminate and treat it, so as not to cause harm to the child.