Are hemangiomas congenital?

Most hemangiomas are congenital, typically forming during fetal development due to abnormal proliferation of vascular endothelial cells. They are either present at birth or become gradually visible within weeks after birth. A minority are caused by acquired factors and belong to benign vascular lesions, so there's no need for excessive concern. However, if a hemangioma grows rapidly, ulcerates, or affects organ function, prompt medical attention is recommended.

Regarding congenital hemangiomas, their development is associated with abnormal blood vessel formation during embryonic development. Hormonal changes in the mother and environmental factors during pregnancy may influence vascular development, leading to hemangioma formation in the fetus. These types of hemangiomas are commonly seen in infants and young children, such as strawberry hemangiomas and cavernous hemangiomas. They may enter a rapid growth phase after birth, followed by gradual regression over time.

A small number of hemangiomas develop later in life and are often related to trauma, hormonal fluctuations, or infections. For example, adult women may develop vascular malformations due to estrogen fluctuations, and abnormal local blood vessel repair after injury can also trigger hemangioma formation. However, acquired hemangiomas are much less common than congenital ones and are mostly localized lesions with relatively manageable treatment options.

In daily life, it's important to avoid friction or impact on areas with hemangiomas, maintain cleanliness of the local skin, and regularly monitor changes in the size and color of the lesion. Dressing infants in soft, loose clothing can help minimize irritation to the affected area and support stability of the lesion.