Epidermoid Cyst — Does Every One Need to Be Removed?

Medical author: Piotr Rak, MD, PhD, specialist in general and oncological surgery - to be approved before publication · Editorial preparation: Wyspa Medycyny Przyjaznej editorial team · Medical review: Piotr Rak, MD, PhD - to be confirmed before publication · Created: 10.07.2026 · Review date: to be completed after approval · Updated: 10.07.2026

This article is educational and does not replace a surgical consultation or histopathological examination. A painful, red, purulent, rapidly growing, hard, ulcerated, bleeding or recurrent lump under the skin should be assessed by a doctor.

Key information in brief

• An epidermoid cyst is usually benign - most often it is not cancer and does not pose an oncological risk.
• "Kaszak" is a common term for a skin or subcutaneous cyst. In practice, it is often an epidermoid cyst or pilar cyst.
• The cyst is usually filled with keratin - a thick, white-yellow material with a characteristic odor. It is not "pus" if there is no infection.
• A small, painless, stable cyst can sometimes be observed after medical assessment.
• Removal is considered when the cyst grows, bothers the patient, often becomes inflamed, hurts, is irritated, ruptures, becomes purulent, is in a visible area or the diagnosis is uncertain.
• Do not squeeze a cyst at home - this may cause inflammation, infection, rupture of the capsule, scarring and recurrence.
• An antibiotic does not remove the cyst. It may be needed for infection, but it does not remove the cyst capsule.
• Incision and drainage alone may bring relief in an abscess or severe inflammation, but it is often not definitive treatment.
• The lowest recurrence risk is usually achieved by removing the entire cyst with its capsule, preferably outside the acute inflammatory phase if the situation allows.
• Atypical, rapidly growing, hard, ulcerated, bleeding or recurrent lesions should be assessed more carefully and often require histopathological examination.

Learn more about the specialist

Piotr Rak, MD, PhD is a specialist in general and oncological surgery at Wyspa Medycyny Przyjaznej in Gdansk. The WMP website states that he deals with, among other things, surgery of the skin and subcutaneous tissue, surgical removal of skin lesions with the possibility of histopathological examination, and removal of moles, epidermoid cysts, lipomas and other skin and subcutaneous tissue lesions.

Meet Piotr Rak, MD, PhD

Does this topic make sense for SEO, AI and Google Search?

Yes. Patients very often search for answers to questions such as: "does an epidermoid cyst need to be removed", "will a cyst disappear on its own", "can you squeeze a cyst", "inflamed cyst", "purulent cyst", "cyst behind the ear", "cyst on the head", "cyst on the back", "cyst vs lipoma", "does a cyst come back", and "epidermoid cyst removal Gdansk". This blog answers these questions educationally and guides the patient toward the right consultation, but it should not replace the service page about skin lesion removal.

That is why the text explains what a cyst is, when it can be observed, when it should be removed, why it should not be squeezed and why the capsule matters for recurrence. Details of the procedure, price, duration, preparation and booking should remain on the service page.

What is an epidermoid cyst?

"Kaszak" is a common Polish term for a skin or subcutaneous cyst. In medical language, this most often means an epidermoid cyst, and on the hairy scalp often a pilar cyst, also called a trichilemmal cyst. Simply put, it is a "sac" under the skin whose wall produces the material filling the cyst.

Despite the common name "sebaceous cyst", a cyst is not always simply a sac of sebum. Many cysts are filled with keratin - a substance associated with the epidermis and hair. This is why the contents can be thick, white-yellow, cheesy and have a characteristic odor.

An epidermoid cyst is usually not cancer. It is a benign lesion. The problem is that not every lump under the skin that a patient calls a cyst really is one. Therefore, a new, growing, painful or atypical lesion should be shown to a doctor.

What does a typical cyst look like?

A typical cyst is felt as a round or oval lump under the skin. It may be movable, elastic and painless for a long time. The skin over it usually has a normal color, although sometimes a small darker point is visible, meaning an opening or a place related to a hair follicle.

A cyst most often appears:

• on the scalp,
• on the face,
• behind the ear,
• on the neck,
• on the back,
• on the chest,
• in the groin,
• in areas irritated by clothing or shaving.

A cyst may be very small, but it can also slowly grow over years. If it becomes painful, red, warm, rapidly enlarges or begins to ooze contents, this may indicate inflammation or infection.

How does a cyst form?

A cyst forms when epidermal cells or structures related to the hair follicle begin to accumulate under the skin and create a cyst. The cyst wall, or capsule, produces the material that fills its inside. Over time, the cyst may enlarge.

Factors that may contribute include blockage of a hair follicle opening, skin injury, acne, chronic irritation, shaving, individual or family predisposition. Some cysts, however, appear without a clear cause.

A cyst is not caused by "dirt" or poor hygiene. It also cannot be effectively treated by stronger washing, squeezing or using exfoliating products on your own.

Is an epidermoid cyst cancer?

No. A typical cyst is benign and is not cancer. For most patients, the problem is discomfort, appearance, recurrent inflammation or the risk of rupture and infection, not oncological danger.

However, it is necessary to distinguish a diagnosed cyst from a lump that the patient calls a cyst. If the lesion is hard, grows quickly, is ulcerated, bleeds, is fixed, looks atypical or returns after previous removal, it requires medical assessment and sometimes histopathological examination.

Histopathological examination after removal helps confirm whether it was truly an epidermoid cyst, pilar cyst or another skin or subcutaneous tissue lesion.

Does every cyst need to be removed?

No. A small, calm, painless and stable cyst does not always require immediate removal. If the doctor assesses that the lesion looks typical and has no warning features, observation can sometimes be chosen.

Observation makes sense especially when:

• the cyst is small,
• it does not hurt,
• it is not growing quickly,
• it is not red,
• it does not ooze,
• it does not bother the patient aesthetically or functionally,
• it is not located in a constantly irritated area,
• the diagnosis does not raise doubts.

This does not mean, however, that the cyst is "cured". The capsule remains under the skin and may enlarge, become inflamed or start to bother the patient in the future.

When is it worth removing a cyst?

Cyst removal is considered when the lesion begins to cause symptoms, recurs, bothers the patient or raises diagnostic doubts. The best time for planned removal is usually when the cyst is not acutely inflamed, very painful or purulent.

The most common reasons for cyst removal are:

• enlargement of the lesion,
• recurrent inflammation,
• pain or tenderness,
• oozing contents,
• rupture of the cyst,
• irritation by clothing, belt, collar, glasses, razor or comb,
• location in a visible area, e.g. face, neck, behind the ear,
• hygienic or cosmetic difficulties,
• uncertain diagnosis,
• need for histopathological examination.

Definitive removal usually consists of excising the entire cyst with its capsule. If only the contents are removed and the capsule remains, the lesion may return.

Will a cyst disappear on its own?

Usually not. A cyst may temporarily shrink, empty, rupture or calm down after inflammation, but this does not mean the cyst has disappeared. If the capsule remains under the skin, the lesion may fill again.

This is a common scenario: the patient says the cyst "burst and disappeared on its own", and after a few weeks or months the lump returns. This happens because the contents were emptied, but the cyst wall continued producing material inside.

Ointments, compresses, peels and home remedies do not remove the cyst capsule. They may also irritate the skin and make later treatment more difficult.

Can you squeeze a cyst?

You should not squeeze a cyst on your own. This is one of the most common causes of inflammation, rupture of the cyst under the skin, infection, abscess, scarring and recurrence. A cyst is not an ordinary pimple. It has a capsule that cannot be safely removed by squeezing the skin.

After squeezing, thick, unpleasant-smelling contents may come out. The patient may feel that the problem has been solved, but if the capsule remains, the cyst may fill again. Pressure can also push the contents into surrounding tissues and intensify inflammation.

If the cyst is painful, red or tense, it is better to consult a doctor than try to "relieve it" at home.

Inflamed cyst - what should you do?

A cyst may become inflamed or infected. It then becomes red, painful, warm, tense and may enlarge quickly. Sometimes pus, oozing, unpleasant odor, fever or enlarged lymph nodes appear.

In acute inflammation, management differs from that of a calm cyst. The doctor may consider anti-inflammatory treatment, an antibiotic, incision and drainage of an abscess, or postponing definitive removal until inflammation calms down. The decision depends on the lesion's appearance, pain severity, presence of pus and general symptoms.

Important: incision and drainage of an abscess may be necessary to control pain and infection, but it does not always mean definitive cyst removal. If the capsule remains, the problem may return.

Cyst, lipoma, abscess or lymph node?

Patients often call every lump under the skin a cyst. In fact, many different lesions may be located under the skin. Diagnosis matters because management differs for an epidermoid cyst, lipoma, abscess or enlarged lymph node.

This table is not for self-diagnosis. It shows that a lump under the skin is worth medical assessment, especially when it changes, hurts or looks atypical.

Why does a cyst come back?

A cyst may return if its capsule was not removed. The cyst capsule produces the material that fills the lesion. Emptying the contents may temporarily reduce the lump, but it does not remove the mechanism of its formation.

Recurrence is more common when:

• the cyst was squeezed,
• it ruptured under the skin,
• it was removed during acute inflammation,
• only incision and drainage were performed,
• the capsule was damaged or difficult to remove completely,
• the patient tends to develop multiple cysts.

That is why planned treatment often aims to remove the entire cyst, not only its contents.

Will an antibiotic cure a cyst?

An antibiotic may be needed if the cyst is infected, the skin is widely red, fever appears, inflammation spreads or the patient has risk factors for complications. However, an antibiotic does not remove the cyst capsule and is not definitive treatment for the cyst itself.

If an abscess has formed in the cyst, an antibiotic may not be enough because accumulated pus often requires incision and drainage. After the acute condition calms down, the doctor may discuss whether it is worth planning removal of the remaining cyst to reduce recurrence risk.

Do not take antibiotics "just in case" or use leftovers from previous treatment. The decision should be made by a doctor after examining the lesion.

When does a cyst require a more urgent consultation?

A cyst or lump that changes atypically or causes inflammatory symptoms requires more urgent assessment. It is not worth waiting for months for a "calmer moment".

See a doctor sooner if the lesion:

• is severely painful,
• is red, hot or tense,
• is purulent or smells unpleasant,
• grows quickly,
• ruptures and oozes,
• causes fever or feeling unwell,
• has extensive redness around it,
• is hard or fixed,
• bleeds or is ulcerated,
• has returned after previous removal,
• is located in a difficult area, e.g. face, eye area, groin, intimate area, scalp,
• is accompanied by enlarged lymph nodes or general symptoms.

Why perform histopathology after cyst removal?

Histopathological examination means assessing the removed tissue under a microscope. It confirms whether the lesion was an epidermoid cyst, pilar cyst, another cyst, an inflammatory lesion or something else. In most cases, the result confirms the benign nature of the lesion, but histopathology provides medical certainty.

Histopathology is especially important when:

• the lesion was atypical,
• it grew quickly,
• it bled,
• it was ulcerated,
• it was hard or fixed,
• it returned after previous treatment,
• the diagnosis before the procedure was uncertain,
• the doctor recommended microscopic confirmation.

From the patient's perspective, histopathology matters because we do not rely only on the appearance of the lesion. We know what was removed.

Will there be a scar after cyst removal?

Every surgical incision in the skin may leave a scar. Its appearance depends on the size of the cyst, location, inflammation, skin tension, healing, wound care and the patient's individual predisposition. It is not honest to promise removal "without a scar".

Planned removal of a calm cyst usually provides better conditions for aesthetic wound closure than a procedure performed during acute inflammation, when tissues are swollen, fragile and infected. This is one reason not to wait until the cyst flares up again.

What should you not do with a cyst?

With a cyst, it is worth avoiding actions that may cause inflammation, infection or make later removal more difficult. Do not:

• squeeze the cyst,
• puncture it with a needle,
• cut it yourself,
• use irritating products from the internet,
• apply caustic substances or alcohol,
• try to remove the capsule at home,
• take antibiotics without indications,
• ignore redness, pain and pus,
• assume every lump is a cyst,
• decline histopathology if the doctor recommends it.

Home attempts to remove a cyst often end with more inflammation, a scar and recurrence of the problem.

The most common myths about cysts

• "Every cyst must be removed." No. A small, calm and typical cyst can sometimes be observed after medical assessment.
• "A cyst will disappear on its own." Usually not. It may empty or shrink, but the capsule often remains and the lesion may return.
• "You can squeeze a cyst like a pimple." No. Squeezing increases the risk of inflammation, infection, scarring and recurrence.
• "An antibiotic will remove a cyst." No. An antibiotic may treat infection, but it does not remove the cyst capsule.
• "If the cyst burst, the problem is solved." Not always. Rupture may reduce the lump, but the capsule may remain.
• "A cyst is cancer." A typical cyst is benign and is not cancer.
• "It does not hurt, so it does not need to be shown." Not always. A new, growing or atypical lump should be assessed even if it is painless.
• "Removal during inflammation is always best." Not always. Sometimes inflammation must first be controlled, and only then can the capsule be removed in a planned procedure.
• "A cyst always comes back after removal." No. After complete removal with the capsule, recurrence risk is lower, although recurrence is still possible.

Do you have a cyst that is growing, hurting, rupturing or coming back?

Do not squeeze it yourself. A surgeon can assess whether observation is enough or whether it is better to plan removal of the entire cyst with histopathological examination.

Consultation and cyst removal at Wyspa Medycyny Przyjaznej

At Wyspa Medycyny Przyjaznej in Gdansk, Piotr Rak, MD, PhD consults and removes skin and subcutaneous tissue lesions, including epidermoid cysts, lipomas, moles and other lumps requiring surgical assessment. In the case of a cyst, the doctor assesses size, location, inflammation, pain, growth rate, skin appearance and whether the lesion requires urgent treatment or planned removal.

If the lesion qualifies for removal, details of the procedure, anesthesia, suturing, post-procedure recommendations, cost and histopathological examination should be discussed during consultation or on the service page. This blog is intended to help the patient understand when a cyst requires treatment and why squeezing or emptying alone does not always solve the problem.

Learn more about Dr Piotr Rak Removal with histopathology Surgery

What should you ask the surgeon about a cyst?

• Does this lesion really look like an epidermoid cyst?
• Could it be a lipoma, abscess, lymph node or another lesion?
• Can the cyst be observed?
• Is planned removal better?
• Is the lesion inflamed?
• Is inflammation treatment or drainage needed first?
• Can the entire cyst be removed with the capsule?
• Will histopathological examination be performed after removal?
• How large may the scar be?
• What is the risk of recurrence?
• How should the wound be cared for after the procedure?
• When should I seek urgent help if the cyst starts to hurt or become purulent?

FAQ - epidermoid cyst and cyst removal

Does every cyst need to be removed?

No. A small, calm, painless and stable cyst can sometimes be observed after medical assessment. Removal is considered when it grows, hurts, becomes inflamed, ruptures, bothers the patient or raises diagnostic doubts.

Is a cyst cancer?

No. A typical cyst is benign. However, not every lump under the skin is a cyst, so atypical, growing, hard, ulcerated or bleeding lesions require assessment.

Will a cyst disappear on its own?

Usually not. A cyst may periodically empty or shrink, but if the capsule remains under the skin, the lesion may fill again.

Can you squeeze a cyst?

You should not do this. Squeezing increases the risk of inflammation, infection, rupture of the capsule, scarring and recurrence. A cyst is best assessed by a doctor.

Why does a cyst come back?

Most often because the cyst capsule remained. Emptying the contents may reduce the lump, but it does not remove the structure that produces material inside.

Will an antibiotic cure a cyst?

An antibiotic may be needed for infection, but it does not remove the cyst capsule. With an abscess, incision and drainage may sometimes be necessary, and definitive removal is planned after inflammation calms down.

When should a cyst be shown to a doctor more urgently?

A painful, red, hot, purulent, rapidly growing, rupturing, bleeding, ulcerated, hard, fixed or recurrent cyst after previous treatment requires quicker consultation.

Is a cyst removed during inflammation?

It depends on the situation. With an abscess, incision and drainage may be needed. Complete removal of the cyst with the capsule is often easier and safer after acute inflammation calms down.

Is histopathology needed after cyst removal?

It is often worth performing, especially when the lesion was atypical, growing, painful, recurrent or the diagnosis was uncertain. Histopathology confirms what the removed lesion was.

Does cyst removal leave a scar?

Every skin incision may leave a scar. Its appearance depends on the lesion size, location, inflammation, wound closure technique and the patient's individual healing.

Who consults cysts at WMP?

At Wyspa Medycyny Przyjaznej, cysts and other skin and subcutaneous tissue lesions are consulted and removed, among others, by Piotr Rak, MD, PhD, specialist in general and oncological surgery.

Sources

• Wyspa Medycyny Przyjaznej, Piotr Rak, MD, PhD: https://www.wyspamedycynyprzyjaznej.pl/pl/dr-piotr-rak
• Wyspa Medycyny Przyjaznej, epidermoid cyst: https://www.wyspamedycynyprzyjaznej.pl/pl/kaszak
• Wyspa Medycyny Przyjaznej, surgical removal of skin lesions with histopathological examination: https://www.wyspamedycynyprzyjaznej.pl/pl/usuniecie-zmian-skornych-z-badaniem-histopatologicznym-gdansk
• Wyspa Medycyny Przyjaznej, lump under the skin: https://www.wyspamedycynyprzyjaznej.pl/pl/guz-pod-skora
• NHS, Skin cyst: https://www.nhs.uk/conditions/skin-cyst/
• Mayo Clinic, Epidermoid cysts - symptoms and causes: https://www.mayoclinic.org/diseases-conditions/epidermoid-cysts/symptoms-causes/syc-20352701
• Mayo Clinic, Epidermoid cysts - diagnosis and treatment: https://www.mayoclinic.org/diseases-conditions/epidermoid-cysts/diagnosis-treatment/drc-20352706
• British Association of Dermatologists, Cysts - epidermoid and pilar: https://www.bad.org.uk/pils/cysts-epidermoid-and-pilar
• Primary Care Dermatology Society, Epidermoid cyst: https://www.pcds.org.uk/clinical-guidance/epidermoid-cyst
• Patient.info, Epidermoid and pilar cysts: https://patient.info/doctor/dermatology/epidermoid-and-pilar-cysts-sebaceous-cysts-pro
• NCBI Bookshelf / StatPearls, Epidermoid cyst: https://www.ncbi.nlm.nih.gov/books/NBK499974/
• Google Search Central, Creating helpful, reliable, people-first content: https://developers.google.com/search/docs/fundamentals/creating-helpful-content
• Google Search Central, Article structured data: https://developers.google.com/search/docs/appearance/structured-data/article
• Google Search Quality Rater Guidelines: https://guidelines.raterhub.com/searchqualityevaluatorguidelines.pdf