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Sebaceous hyperplasia consists of benign, yellowish facial papules caused by enlarged sebaceous glands, commonly treated with procedural dermatology techniques.
Sebaceous hyperplasia is a common benign condition characterised by the enlargement (hyperplasia) of sebaceous glands in the skin, resulting in small, yellowish, soft papules on the face. These lesions represent an overgrowth of otherwise normal sebaceous gland lobules and are entirely benign with no potential for malignant transformation.
Sebaceous hyperplasia is extremely common in middle-aged and older adults, with the prevalence increasing with age. The condition affects both men and women, although some studies suggest a higher prevalence in men. Lesions are most frequently found on the forehead, cheeks, and nose, where sebaceous gland density is highest. While medically harmless, the lesions may be cosmetically bothersome and are a frequent reason for dermatological consultation.
Sebaceous hyperplasia develops as a result of the progressive enlargement of individual sebaceous gland lobules over time. The sebaceous glands are androgen-sensitive structures that produce sebum (oil). As the skin ages, the turnover of sebocytes (sebaceous gland cells) slows while the glands continue to enlarge, leading to the characteristic visible papules.
Factors associated with the development of sebaceous hyperplasia include:
Sebaceous hyperplasia is not caused by infection, is not contagious, and is not related to skin hygiene or dietary factors.
Sebaceous hyperplasia presents with distinctive clinical features:
Lesions grow slowly over time and do not resolve spontaneously. New lesions may continue to develop as the patient ages. Rarely, a linear or clustered arrangement may occur, and giant variants (greater than 1 centimetre) have been reported but are uncommon.
Sebaceous hyperplasia is typically diagnosed by clinical examination. The characteristic yellowish colour, central umbilication, and facial location are usually sufficient for confident identification. Dermoscopy can be a valuable adjunct, revealing a characteristic pattern of yellowish-white globular structures arranged in a crown-like pattern around a central crater (the "crown vessels" pattern), with branching vessels radiating from the centre.
The most important differential diagnosis is basal cell carcinoma, which can present as a small, pearly, translucent papule with telangiectasia on the face. Distinguishing between the two conditions is clinically significant, as basal cell carcinoma requires active treatment. Dermoscopy is particularly helpful in this differentiation, as basal cell carcinoma typically demonstrates arborising (tree-like) vessels, blue-grey ovoid nests, and leaf-like structures that are absent in sebaceous hyperplasia. A biopsy may be performed for any lesion with atypical features.
Sebaceous hyperplasia does not require treatment for medical reasons. Treatment is pursued for cosmetic improvement and is typically performed through procedural dermatology techniques. Multiple effective options are available, and the choice of method depends on the number and size of lesions, patient preference, and skin type.
Electrosurgery (electrodesiccation or electrocautery) is one of the most commonly used methods for treating sebaceous hyperplasia. Light electrodesiccation is applied to each lesion under local anaesthesia, destroying the enlarged gland tissue with minimal scarring. This technique is well suited for treating multiple lesions in a single session.
Ablative and non-ablative laser treatments provide precise destruction of sebaceous hyperplasia lesions. Carbon dioxide (CO2) laser ablation is particularly effective, vaporising the gland tissue with controlled depth. Non-ablative lasers including pulsed dye laser and diode laser may also be used. Laser treatments offer excellent cosmetic outcomes with a low risk of scarring.
Light cryosurgery with liquid nitrogen can be applied to individual lesions. Brief freeze times are used to minimise the risk of hypopigmentation, which is a potential side effect on facial skin. Cryotherapy is most suitable for patients with a small number of lesions.
Topical retinoids may reduce the prominence of sebaceous hyperplasia lesions over time but rarely achieve complete clearance. Chemical peels using trichloroacetic acid (TCA) applied directly to individual lesions have been reported as effective. Photodynamic therapy has been used in some cases, particularly when numerous lesions are present. Oral isotretinoin can reduce sebaceous gland size but is not typically used for this indication alone due to its side effect profile, and lesions tend to recur after discontinuation.
Recurrence of treated lesions is possible, and new lesions may continue to develop over time. Maintenance treatments may be required for optimal long-term cosmetic results.
Dermatological assessment is recommended for any facial papule or bump that is new, changing, or of uncertain diagnosis. While sebaceous hyperplasia is benign, its resemblance to basal cell carcinoma makes professional evaluation important to ensure correct identification. Patients who are cosmetically concerned about existing lesions can discuss procedural treatment options through a consultation.
A referral from a family physician is the standard pathway to access specialist dermatology care. Dr. Maksym Breslavets at the Centre for Medical and Surgical Dermatology provides specialist evaluation and procedural treatment of sebaceous hyperplasia, including electrosurgery, laser ablation, and cryotherapy.
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