Bony Bump on Head: Possible Causes and Need for Evaluation

A persistent bony bump on the skull requires medical assessment, even if painless and long-standing (5 years). Possible causes:

  • Exostosis: Benign bone outgrowth.
  • Osteoma: Benign bone tumor.
  • Fibroma: Benign fibrous tissue tumor.
  • Sebaceous cyst: Blocked gland (soft, movable).
  • Rare: Infection, malignancy, developmental anomaly.

See a doctor/dermatologist for imaging/biopsy if needed to confirm diagnosis and rule out serious pathology.

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