Sebaceous cyst
Alternative Names
Epidermal cyst; Keratin cyst; Epidermoid cystSymptoms
The main symptom is usually a small, non-painful lump beneath the skin. However, if it becomes infected, you may have redness, tenderness, or increased temperature of the skin over the area.
Grayish-white, cheesy, foul-smelling material may drain from the cyst.
Exams and Tests
In most cases, your doctor can diagnose this type of cyst by simply examining your skin. Occasionally, a biopsy may be needed to rule out other conditions.
References
Habif TP. Clinical Dermatology. 4th ed. St. Louis, Mo: Mosby; 2004.
Roberts JR, Hedges JR. Clinical Procedures in Emergency Medicine. 4th ed. Philadelphia, Pa: WB Saunders; 2004.
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