Symptoms and How Lumps Are Diagnosed
The most common symptom is a small, round lump beneath the skin. Typical features include:
- Smooth or slightly firm texture
- Skin-colored or pale appearance
- Painless unless infected
If a cyst becomes infected, symptoms may include:
- Redness and warmth
- Swelling or tenderness
- Thick, unpleasant-smelling discharge
Doctors usually diagnose epidermoid cysts through a physical examination. If the diagnosis is unclear or the lump has unusual features, additional tests may be recommended, such as:
- Ultrasound or MRI to assess size and depth
- Biopsy to rule out other conditions

