TL;DR: Key Takeaways
- Most persistent bumps are benign (cysts, lipomas)
- Pearly, waxy bumps may be basal cell carcinoma
- Growing, bleeding, or non-healing bumps need evaluation
- Never try to remove a suspicious bump yourself
Discovering a bump on your skin that doesn't go away can be worrying. While many persistent bumps are completely harmless, some require medical attention. Understanding the different types of skin bumps and their characteristics will help you know when to seek care.
Benign (Non-Cancerous) Bumps
Sebaceous Cysts
BenignSlow-growing bumps under skin from blocked oil glands.
Appearance: Round, firm, moveable bump under the skin
Location: Face, neck, trunk
Features: May have central pore; can become infected
Action: Usually harmless; removal if desired or infected
Lipomas
BenignSoft, fatty lumps that grow slowly beneath the skin.
Appearance: Soft, doughy, easily moveable
Location: Shoulders, neck, arms, back, thighs
Features: Painless unless pressing on nerves
Action: Monitoring; removal if bothersome
Dermatofibromas
BenignHard, small bumps often after minor injury.
Appearance: Firm, raised, pink to brown
Location: Commonly on legs
Features: Dimples when pinched from sides
Action: Harmless; removal optional
Cherry Angiomas
BenignSmall, bright red bumps made of blood vessels.
Appearance: Bright cherry-red, smooth dome
Location: Anywhere; increase with age
Features: Very common in adults over 30
Action: Harmless; cosmetic removal available
Skin Tags and Warts are also common benign bumps. Learn more about skin tags vs warts.
Potentially Concerning Bumps
Basal Cell Carcinoma (BCC)
Needs EvaluationThe most common type of skin cancer.
Appearance: Pearly or waxy bump; may have visible blood vessels
Color: Pink, red, white, or skin-colored
Features: May bleed easily, form crust, or develop central depression
Location: Usually sun-exposed areas (face, ears, neck)
Squamous Cell Carcinoma (SCC)
Needs EvaluationThe second most common skin cancer.
Appearance: Firm, red nodule; or flat lesion with scaly surface
Features: May develop from actinic keratosis; can form non-healing sore
Location: Sun-exposed areas
Learn more about BCC early signs and check the ABCDE rule for melanoma.
Warning Signs: When a Bump Needs Evaluation
See a Doctor If Your Bump:
Is growing or changing in size
Bleeds without significant injury
Has irregular or poorly defined borders
Contains multiple colors
Forms a sore that doesn't heal in 4 weeks
Is pearly, waxy, or has visible blood vessels
Itches persistently or is painful
Looks different from your other skin marks
Appeared after age 40 and is changing
Benign vs Concerning: Quick Comparison
| Feature | Usually Benign ✓ | Possibly Concerning ⚠️ |
|---|---|---|
| Growth | Stable or very slow | Steadily growing |
| Borders | Smooth, well-defined | Irregular, ragged |
| Color | Uniform | Multiple colors |
| Texture | Soft, moveable | Firm, fixed, pearly |
| Surface | Smooth or slightly rough | Ulcerated, bleeding |
What to Expect at the Doctor
Visual examination of the bump's characteristics
Dermoscopy: magnifying device for closer inspection
Palpation: feeling the texture and mobility
Biopsy: removing sample for lab testing if concerning
Imaging: ultrasound for deeper lumps if needed
Treatment Options
For Benign Bumps
- • Observation: Monitor for changes
- • Surgical excision: Complete removal
- • Cryotherapy: Freezing small lesions
- • Laser treatment: For cherry angiomas
For Concerning Bumps
- • Biopsy first: To confirm diagnosis
- • Surgical removal: With appropriate margins
- • Mohs surgery: For skin cancers on face
- • Radiation/topical: In some cases