Cyst
Cyst — a large, soft, fluid- or pus-filled lesion that forms deep beneath the skin's surface, often appearing as a painful, swollen lump. Cystic lesions are among the most severe forms of acne and, like nodules, are strongly associated with scarring.
Key points
- Cysts are typically softer than nodules because they contain fluid or pus rather than solid tissue.
- They form deep within the skin and can be painful and slow to heal.
- Cystic acne has a high likelihood of leaving scars or lasting marks.
- These lesions generally do not respond well to over-the-counter treatments.
- Attempting to pop or drain a cyst at home can worsen inflammation and scarring.
Frequently asked
What is the difference between a cyst and a nodule?
Both form deep in the skin, but a cyst is generally softer and filled with pus or fluid, while a nodule is firmer and more solid.
Why shouldn't I pop a cyst?
Cysts sit deep in the skin, and squeezing them can spread inflammation and raise the risk of scarring, so cystic acne is best managed by a dermatologist.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
