Dermatosis papulosa nigra (DPN) is a benign skin condition that is characterised by small, dark brown to black papules that typically develop on the face and neck of people with darker skin. The condition is more common in people of African and Asian descent, and it is estimated to affect up to 30% of Black Americans and the condition is also relatively common in people of Asian and Australian descent.
In Australia, the prevalence of DPN is estimated to be around 10% of the population. This is similar to the prevalence in the United States, but it is significantly lower than the prevalence in some parts of Asia, where up to 50% of people may have DPN.
The exact reason for the higher prevalence of DPN in Asia is not known, but it is thought to be related to factors such as genetics, climate, and sun exposure. DPN is more common in people with a family history of the condition, and it is also more common in people who live in warm, humid climates.
DPN is often misdiagnosed as other skin conditions, such as acanthosis nigricans, milia, seborrheic keratosis, or even melanoma. This is because the lesions of DPN can be similar in appearance to those of other conditions. However, there are some key differences that can help to distinguish DPN from other skin conditions.
For example, DPN lesions are typically smaller and more uniform in size than those of acanthosis nigricans. Additionally, DPN lesions do not have the same warty or scaly appearance as seborrheic keratosis. And finally, DPN lesions are not associated with any underlying medical conditions, such as diabetes or insulin resistance, which is often the case with acanthosis nigricans.
If you have small, dark brown to black papules on your face or neck, it is important to see a professional to get a diagnosis. DPN is a benign condition, but it can be a cosmetic concern for some, and there are effective treatments available.
How is Dermatosis Papulosa Nigra Formed?
The exact cause of DPN is unknown, but it is thought to be related to increased melanin production in the skin. Melanin is the pigment that gives skin its colour, and it is produced by cells called melanocytes. In people with DPN, the melanocytes may be overactive, leading to the formation of dark brown to black papules.
How Can Dermatosis Papulosa Nigra Be Removed?
There are a number of different ways to remove DPN lesions, including:
- Curettage: This is a procedure in which a practitioner uses a small, sharp instrument to scrape away the lesions.
- Electrocautery: This is a procedure in which a practitioner uses an electric current to cauterise away the lesions.
- Diathermy: This is a therapeutic treatment that uses electric currents to dissolve DPN lesions.
- Laser therapy: This is a procedure in which a practitioner uses a laser to remove the lesions.
The best treatment for DPN will depend on the individual patient’s requirements. Some patients may prefer a more conservative treatment, such as curettage, while others may prefer a more permanent treatment, such as laser therapy.
How Can Dermatosis Papulosa Nigra Be Prevented?
There is no way to prevent DPN, but there are some things you can do to reduce your risk of developing the condition. These include:
- Protecting your skin from the sun: The sun can damage your skin and increase your risk of developing DPN. Be sure to wear sunscreen with an SPF of 30+ or higher every day, even on cloudy days.
- Seeing a practitioner regularly: If you have any concerns about your skin, be sure to see a practitioner regularly. They can help to diagnose any skin conditions you may have and recommend the best skin health treatment options for you.
Dermatosis papulosa nigra is a common but often misdiagnosed skin condition. If you have small, dark brown to black papules on your face or neck, it is important to see a practitioner to get a diagnosis. There are effective and safe treatments available for all skin types.