the nigra is an infection of the keratinized layers of the skin appears as a brownish spot caused by
the overproduction of melanin, the pigment responsible for skin color. It is commonly known as a birthmark or a mole. It is not an infection, but rather a benign (non-cancerous) growth on the skin.
The "nigra" you are referring to is called "Dermatosis Papulosa Nigra" (DPN), which is a common skin condition that primarily affects people with dark skin tones. DPN is characterized by the presence of small, dark, raised spots on the face, particularly around the eyes and cheeks.
The exact cause of DPN is not fully understood, but it is believed to be related to genetics and sun exposure. The spots are formed due to the overgrowth of the keratinocytes, which are the cells that make up the outermost layer of the skin.
The treatment options for DPN include:
1. Cryotherapy: This method involves freezing the spots with liquid nitrogen to destroy the excessive skin cells. It may cause some temporary crusting and redness, but this usually resolves on its own.
2. Electrocautery: In this procedure, a small electrical current is used to burn off the spots. Local anesthesia may be used to minimize discomfort.
3. Laser therapy: Laser treatment can be used to target and remove the excess skin cells. Multiple sessions may be required for optimal results.
It is important to consult a dermatologist for an accurate diagnosis and appropriate treatment options. They will be able to provide personalized recommendations based on the severity of the condition and individual circumstances.