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The Pearly Spot on Your Chest: Decoding Decolletage Sun Damage and Bumps

By Michael C. · Written and reviewed by Michael C.

Skin Cancer Screening · Published 2026-10-09 · 12 min read · 1778 words

That tiny, glossy spot on your chest could be a simple cyst or a sign of cumulative sun damage. Here is how to tell the difference and protect your decolletage.

Key takeaways

  • The upper chest accumulates high levels of cumulative UV damage through low-cut clothing and open shirt collars.
  • A pearly bump on sun-exposed skin can be a benign cyst, sebaceous overgrowth, or a slow-growing basal cell carcinoma.
  • Chest skin has fewer oil glands and heals more slowly than facial skin, making it prone to irritation and sun damage.
  • A non-healing bump that bleeds, scabs, or grows over several months requires a prompt examination by a clinician.
  • Daily application of broad-spectrum sunscreen to the decolletage is non-negotiable under South African sun conditions.

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Source: scanskinai.com (https://www.scanskinai.com/spot-on/chest-pearly-bump)

Cover image: Margo Evardson — credit