What causes a black, raised bump on the nose, and what should be done about it?
Generally, black raised lesions on the nose may be caused by various conditions such as blackheads, hyperpigmentation, sebaceous cysts, pigmented nevi (moles), or seborrheic keratosis. Depending on the specific situation, patients can choose appropriate management methods including general care, medication, or surgical treatment. Detailed analysis is as follows:
1. Blackheads
When hair follicles become clogged, sebum oxidizes and turns black, forming a black bump. Cleanse with a gentle facial cleanser, avoid squeezing, exfoliate gently once a week, and apply skincare products containing salicylic acid to unclog pores.

2. Hyperpigmentation
After sun exposure or local inflammation, melanocytes become overactive, leading to the formation of dark, raised spots on the nose. Apply sunscreen and wear a hat when outdoors, consume more fruits and vegetables rich in vitamin C, and avoid repeated irritation to the nasal area.
3. Sebaceous Cyst
Blockage of sebaceous gland ducts causes accumulation of sebum, forming a cyst that may appear black due to surface oxidation. Keep the nasal area clean, apply fusidic acid cream as directed by a physician, and consider surgical excision if the cyst is large.
4. Pigmented Nevus (Mole)
A benign growth formed by clustered melanocytes, appearing as a black raised lesion. Avoid friction or irritation; seek medical evaluation promptly if changes occur. Treatment options include carbon dioxide laser therapy or surgical removal.
5. Seborrheic Keratosis
Abnormal proliferation of keratinocytes due to skin aging results in black or brown raised lesions. Topical tretinoin cream may be used under medical guidance, or treatments such as liquid nitrogen cryotherapy or electrocautery can be considered for removal.
The skin on the nose is sensitive; therefore, black raised lesions should not be treated arbitrarily. Maintain proper cleansing and sun protection in daily life. If a lesion grows rapidly, changes shape, or becomes painful, seek prompt medical attention to determine its nature and ensure safe, standardized management.