Stork bites, medically known as nevus simplex, are common birthmarks seen in newborns, affecting approximately 30% to 50% of all infants. These flat, pink, or reddish-purple discolorations are also called salmon patches or angel kisses, depending on their location.
Understanding Stork Bite Formation
Stork bites are not inherited and are not considered genetic birthmarks. Their appearance is rooted in the physiological development of blood vessels during the fetal stage. These marks result from the dilation, or widening, of tiny blood vessels called capillaries located very close to the skin’s surface.
The thin and delicate nature of a newborn’s skin allows the increased blood flow within these dilated capillaries to be visible as a pink or red patch. This coloration can become more pronounced when the baby cries, gets warm, or strains, as these actions temporarily increase blood flow to the area. Stork bites are classified as a type of vascular birthmark.
Common Locations and Natural Course
Stork bites are frequently found on the forehead, often between the eyebrows, leading to the nickname “angel kisses.” Other typical facial locations include the eyelids, nose, and upper lip. The nape of the neck is another very common site, which is where the term “stork bite” originated from folklore.
The natural progression of most stork bites involves fading over time. Facial stork bites tend to lighten significantly or disappear completely within the first one to two years of life. However, those located on the nape of the neck are more likely to persist into adulthood, though they typically become less noticeable and are often covered by hair.
When to Consult a Doctor
Stork bites are generally harmless and usually do not require any medical treatment. However, it is advisable to consult a healthcare provider if the birthmark undergoes noticeable changes. This includes instances where the mark changes significantly in size, shape, or color, or if it becomes raised or swollen.
A medical consultation is also appropriate if the mark causes any discomfort, such as bleeding or itching. Additionally, if there is any uncertainty about whether the mark is a stork bite or another type of birthmark, seeking professional advice can provide clarity and reassurance.