Can birthmarks disappear on their own?

Yes, some types of birthmarks can disappear on their own over time, while others remain the same or may worsen as you age. Whether a birthmark fades depends on its type and composition. In general, birthmarks are classified into two main categories: vascular birthmarks and pigmented birthmarks, each with its own characteristics and potential course.

Vascular Birthmarks and Disappearance

Vascular birthmarks consist of blood vessels that have not formed correctly and are usually red in color [2]. Common examples include hemangiomas, sometimes known as strawberry marks. Some of these tumors may disappear spontaneously. For example, infantile hemangiomas often grow initially, then begin to regress gradually during early childhood, and may disappear completely by a certain age without the need for medical intervention [2].

However, other types of vascular birthmarks, such as port-wine stains, do not disappear on their own. These birthmarks are caused by an excessive amount of capillaries under the skin, and their colors can range from light pink to dark purple [1]. In some cases, a port-wine stain may be a sign of an underlying condition such as Sturge-Weber syndrome, a rare neurological condition characterized by the abnormal development of small blood vessels in the brain, eyes, and skin [1]. If the birthmark is located on one side of the face around the eye or forehead, it may require careful medical evaluation [1].

Pigmented Birthmarks and Their Fate

Pigmented birthmarks consist of clusters of pigment cells that determine skin color and can come in various colors, such as light to dark brown, gray to black, or even blue [2]. Moles are a common type of pigmented birthmark [2]. Most pigmented birthmarks do not disappear on their own; rather, they remain as they are or may change over time [2]. For example, café-au-lait spots are common pigmented birthmarks that appear at birth or shortly after, and they are light brown patches [3]. These spots typically do not disappear.

When Does a Birthmark Need Medical Evaluation?

Although most birthmarks are harmless, some may require medical evaluation. You should consult a healthcare provider if the birthmark:

• Bleeds [2].
• Causes pain or itching [2].
• Shows signs of infection [2].
• Changes in color, size, shape, or texture [3].
• Develops any open sores [3].

Large pigmented birthmarks present at birth, especially those covering an area larger than the size of a fist, may increase the risk of skin cancer (melanoma) [3]. Therefore, it is advisable to monitor these birthmarks regularly and undergo periodic skin exams.

Available Treatment Options

If a birthmark does not disappear on its own and causes medical or cosmetic concern, treatment options may be available. For example, laser therapy can be used to lighten or remove certain vascular birthmarks like port-wine stains [1]. For moles, surgery may be used for removal if they affect appearance or increase the risk of skin cancer [3]. The best treatment options should always be discussed with a dermatologist.

For more information on birthmarks, you can visit Birthmarks: When are they natural and when do they need medical evaluation? (Arabic)

Medical references

• Birthmarks
• Sturge-Weber Syndrome
• Birthmarks - pigmented