Have you noticed a firm lump on your scalp that seems to be slowly growing?
Pilar cysts are common, usually harmless swellings that develop on the scalp. They often feel smooth, firm and mobile under the skin and may remain stable for years without causing symptoms.
Pilar cysts are seen more frequently in women and can run in families. While most pilar cysts are not dangerous, they can occasionally become inflamed, infected or uncomfortable, particularly when irritated by hair grooming or pressure. Some individuals also seek removal for cosmetic reasons or peace of mind.
At APAX Medical & Aesthetic Clinic, pilar cyst removal is performed using a safe, minor surgical approach, with careful attention to comfort, wound healing and cosmetic outcome. A consultation allows proper assessment and discussion of whether removal is recommended for your specific case.
Book an appointment to have a pilar cyst assessed and discuss suitable treatment options with our medical team.
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Pilar
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A pilar cyst, also known as a trichilemmal cyst, is a common type of benign skin cyst that most often develops on the scalp [1]. Around 90% of pilar cysts occur in the scalp region, making them one of the most frequent cysts found in this area [2].
Pilar cysts are generally harmless and tend to grow slowly over time. They are usually skin-coloured, smooth and firm to the touch, and may feel mobile when gently pressed between the fingers. Although they are not dangerous, many people choose to have them removed due to discomfort, repeated irritation or cosmetic concerns.
It is common for individuals to have more than one pilar cyst. Unlike epidermoid cysts, pilar cysts do not have a visible central opening (punctum). While they are typically stable, pilar cysts can occasionally rupture or become inflamed or infected, leading to redness, swelling, pain or discharge.
Pilar cysts are relatively common, affecting an estimated 5–10% of the population [3]. They are seen more frequently in women than in men, although the exact reason for this difference is not fully understood.
These cysts also tend to run in families, suggesting a genetic predisposition [4]. Individuals with a family history of pilar cysts may develop multiple cysts over time, most commonly on the scalp.
The exact cause of pilar cysts is not completely understood. However, they are known to originate from the outer root sheath of the hair follicle and are lined with keratin, a protein naturally found in hair and skin [5].
Pilar cysts develop when keratin accumulates within the follicle, forming a firm, enclosed swelling beneath the skin. They are not caused by poor hygiene and are not infectious. While usually stable, they may enlarge slowly over time or become inflamed if irritated or traumatised.
Most pilar cysts are diagnosed based on their characteristic clinical features. They typically grow slowly over time, feel smooth and firm with well-defined edges, and do not have a central opening (punctum), unlike epidermoid cysts. A family history is common, as pilar cysts may follow an autosomal dominant inheritance pattern.
In most cases, no further tests are required. If the diagnosis is uncertain, imaging studies such as ultrasound, CT, or MRI scans may be used to clarify the nature of the swelling.
Most pilar cysts occur on the scalp and may be repeatedly irritated by combing, brushing or pressure. Occasionally, a pilar cyst can rupture or become infected, leading to pain, redness, swelling and discharge [6].
If infection occurs, medical treatment is required to control inflammation and relieve symptoms. Malignant change arising from pilar cysts is very rare. As a precaution, removed cysts are usually sent for histological examination to confirm the diagnosis.
Pilar cysts do not always require removal if they are small, painless and not causing any problems. Many remain stable for years and can be safely monitored.
Removal of pilar cysts may be recommended if they:
A medical consultation allows proper assessment of the cyst and discussion of whether removal is appropriate, as well as the timing and method of treatment.
Pilar cysts are removed using a minor surgical procedure performed under local anaesthetic [7]. The aim is to remove the cyst completely, including its capsule, to reduce the risk of recurrence.
The procedure typically involves the following steps:
Pilar cyst removal is usually a quick outpatient procedure, and most patients can return home shortly afterwards. The removed cyst is commonly sent for histological examination to confirm the diagnosis. Aftercare instructions are provided to support healing and minimise scarring.
After pilar cyst removal, most patients can return to normal daily activities on the same day. Mild discomfort, swelling or tenderness around the treated area is common and usually settles within a few days.
To support healing, you may be advised to:
Your doctor will provide personalised aftercare advice and let you know what to expect during recovery.
Any surgical procedure involving an incision can result in a scar. With pilar cyst removal, scarring is usually minimal, especially as the scalp tends to heal well and scars are often concealed by hair.
The size and visibility of the scar depend on factors such as the size of the cyst, healing response and aftercare. Careful surgical technique and proper wound care help minimise scarring and support a good cosmetic outcome.
Pilar cysts are common, usually benign scalp lumps that may remain stable or gradually enlarge over time. While not all pilar cysts require treatment, removal may be recommended when they cause discomfort, become infected, recur or raise cosmetic or diagnostic concerns.
At APAX Medical & Aesthetic Clinic, pilar cyst removal is performed as a minor surgical procedure with careful attention to safety, comfort, and cosmetic outcome. Each case is assessed individually to ensure appropriate treatment and thorough aftercare.
Book an appointment today to have a pilar cyst assessed and discuss whether removal is suitable for you, along with the expected procedure and recovery.
Pilar cysts are usually benign and not dangerous. They often grow slowly and remain painless unless they become inflamed, infected or repeatedly irritated.
Pilar cysts do not usually disappear without treatment. Once formed, they tend to remain the same size or gradually enlarge over time.
Pilar cyst removal is performed under local anaesthetic, so the area is numb during the procedure. Most patients experience only mild discomfort afterwards, which settles within a few days.
Pilar cyst removal is a minor outpatient procedure that usually takes 20–40 minutes, depending on the size and location of the cyst.
Pilar cysts are unlikely to recur if the entire cyst and its capsule are removed. Incomplete removal may increase the risk of recurrence.
Pilar cysts do not always need removal if they are small and asymptomatic. Removal may be advised if they grow, cause discomfort, become infected or for cosmetic or diagnostic reasons.
Recovery after pilar cyst removal is usually quick, with most patients returning to normal activities on the same day or the following day. Complete healing typically occurs within 1–2 weeks, depending on wound size and location.
Side effects of pilar cyst removal surgery are generally mild and temporary. These may include localised swelling, tenderness, redness or minor bleeding at the surgical site.
Serious complications from pilar cyst removal are uncommon. Rare risks include infection, delayed wound healing, scarring or recurrence if the cyst capsule is not fully removed.
Most patients do not require time off work after pilar cyst removal, especially for desk-based roles. Your doctor may advise brief rest if the cyst was large or located in an area subject to friction.
Yes, pilar cyst removal is a safe and commonly performed minor surgical procedure in Singapore when carried out by a trained medical professional.
The cost of pilar cyst removal in Singapore varies depending on the size, number and complexity of the cysts. A consultation is required for accurate pricing.
Although harmless, many patients may want their pilar cyst removed due to its appearance history of recurrent infections. Contact us today to schedule a consultation, so that Dr. Ng can develop a personalized treatment approach for resolving your skin concerns and helping you to achieve long-term improvements in the appearance of your skin.
Dr. Moses Ng is a distinguished professional in the field of aesthetic medicine, renowned for his expertise in advanced cosmetic procedures. With over 15 years of experience, extensive training and a keen eye for detail, Dr. Ng specializes in a wide range of treatments, including injectables, laser therapies, and acne scar management.
Dr. Moses Ng’s commitment to excellence and patient-centric approach have earned him a reputation as a trusted clinician in aesthetic medicine. His continuous pursuit of the latest advancements in the field ensures that his patients receive the highest standard of care and the most effective treatments available.
