Understanding Lumps Near the Ear: Causes and What to Do

A painful, draining, rapidly growing lump near the ear (preauricular/parotid region) requires prompt medical evaluation. The differential includes:

Common Causes

• Infected sebaceous cyst: Blocked sebaceous gland → fluctuant nodule; if infected: erythema, tenderness, purulent drainage.
• Furuncle (boil) / carbuncle: Deep folliculitis (S. aureus); painful, fluctuant, may drain pus.
• Abscess: Walled-off pus collection; fluctuant, erythematous, tender.
• Parotitis: Parotid gland infection (bacterial/viral) or obstruction (sialolithiasis) – swelling over jaw angle, worse with eating.
• Lymphadenitis: Reactive nodes from scalp/face/ear infection; tender, mobile.
• Herpes zoster (shingles): Vesicular rash in V2/V3 dermatome; pain precedes rash.

Serious / Urgent Causes

• Malignancy: Parotid tumor (pleomorphic adenoma, mucoepidermoid carcinoma), lymphoma, metastatic SCC (from scalp/face skin cancer). Hard, fixed, non-tender, progressive.
• Necrotizing fasciitis: Rapid spread, severe pain out of proportion, crepitus, systemic toxicity – surgical emergency.
• Mastoiditis: Postauricular swelling, ear protrusion, fever, otorrhea – complication of otitis media.

When to Seek Immediate Care

• Rapid growth, spreading redness, fever, systemic illness
• Facial nerve weakness (drooping)
• Difficulty breathing/swallowing
• Overlying skin necrosis/blistering

Diagnostic Steps

1. History + exam (cranial nerves, oral cavity, otoscopy)
2. Ultrasound (first-line: cystic vs. solid, vascularity, nodes)
3. CT/MRI if deep extension or malignancy suspected
4. FNA/biopsy if neoplasm suspected
5. Culture drainage if infected

Do not squeeze or self-drain. See a clinician promptly for accurate diagnosis and treatment.