Small Bump on Head Near Ear: Causes, Red Flags & Medical Evaluation

A persistent, tender bump near the ear (preauricular area) warrants clinical evaluation. Do not self-diagnose.

Common Causes (Benign)

• Enlarged lymph node: Reactive to scalp/face/ear infection, viral illness, dental issues. Rubbery, mobile, <1 cm. Resolves in weeks.
• Sebaceous (epidermoid) cyst: Slow-growing, mobile, central punctum. Cheesy keratin discharge if ruptured. Can inflame/infect.
• Lipoma: Soft, doughy, mobile, non-tender. Subcutaneous.
• Preauricular sinus / pit: Congenital tract. Can infect → abscess.
• Parotid tail mass: Pleomorphic adenoma (benign mixed tumor) most common. Firm, mobile, deep to fascia.
• Dermatofibroma / neurofibroma: Firm, button-like.

Concerning Features (Need Urgent Evaluation)

• Rapid growth, fixation to deep tissue/skin
• Hard, irregular, non-mobile
• Overlying skin changes (ulceration, color change)
• Cranial nerve deficits (facial asymmetry, hearing loss)
• Systemic: weight loss, night sweats, fever
• History of skin cancer, radiation, immunosuppression

Red Flags Requiring IMMEDIATE Care

• Headache + nausea/vomiting + confusion → intracranial process
• Focal weakness, numbness, slurred speech → stroke/TIA
• Seizure
• Progressive cranial nerve palsy

Diagnostic Pathway

1. History + focused exam (cranial nerves, neck nodes, otoscopy)
2. Ultrasound (first-line: cystic vs. solid, vascularity, parotid vs. node)
3. CT/MRI if deep, large, nerve involvement suspected
4. FNA/core biopsy if neoplastic concern
5. Excisional biopsy for definitive diagnosis (lipoma, cyst, parotid tumor)

Most preauricular lumps are benign nodes or cysts. But parotid tumors and malignancies occur here. See a clinician (ENT, dermatology, primary care) for proper triage.