Understanding Birthmarks: Formation, Types, and Normality

Either you are born with a birthmark or you aren't. You don't just acquire one. That's why it is called a birthmark!

Genetics and Birthmarks

The moment a person is conceived, a majority of your traits are set, like eye color, hair color, and birthmarks. Genetics play a significant role in the formation of these marks, as they are determined before birth.

Types of Birthmarks

There are two primary types of birthmarks: vascular and pigmented. Both types occur during development in the womb or uterus.

Vascular Birthmarks

Vascular birthmarks are collections of blood vessels that are very superficial in the skin. For example, a hemangioma is a type of vascular birthmark that results from an abnormal overgrowth of blood vessels.

Pigmented Birthmarks

Pigmented birthmarks are collections of melanocytes, the cells that produce melanin, which is responsible for skin color.

Formation of Birthmarks

One does not 'acquire' a birthmark; the clue is in the words that make up the compound word: birth and mark. A mark that is at birth. They are small imperfections in skin development and are generally harmless.

When discussing the formation of birthmarks, experts acknowledge that the process is not fully understood. However, it is believed that the formation of vascular birthmarks occurs due to the abnormal development of blood vessels under or in the skin. Blood vessel overgrowth may result in too many vessels or abnormally wide ones.

Pigmented birthmarks form when cells that create pigment color, or melanin, overgrow. This overgrowth results in congenital naevi or moles.

Normality of New Birthmarks

Some individuals may notice new birthmarks forming on their bodies at various points in their lives. Is this normal? While most birthmarks are present at birth, the formation of new birthmarks can occur in some cases, though it is uncommon.

For example, when a woman's stomach skin goes through a process of shrinking back to its normal state after giving birth, the skin can undergo changes in elasticity, leading to the appearance of what might be mistakenly perceived as new birthmarks. This is a natural process rather than the sudden appearance of a birthmark.

Conclusion

Understanding the formation and types of birthmarks can help alleviate concerns about their presence and changes in the skin over time. Most birthmarks are harmless and have no significant impact on health. Whether new or present from birth, these marks are simply a part of your unique skin and are a fascinating aspect of human physiology.