Seborrhoeic Keratosis Diagnosis and Removal in London

Understanding seborrhoeic keratosis

Seborrhoeic keratosis (plural: seborrhoeic keratoses) is one of the most common non-cancerous skin conditions. These growths often appear as if they are “stuck on” to the skin surface and can range from a few millimetres to several centimetres in size. They can develop on the face, trunk, scalp, or limbs, but not usually on palms or soles.

Although they are harmless, many people seek reassurance or treatment because of cosmetic concerns or discomfort from irritation (e.g. by clothing or jewellery). Because they sometimes resemble melanoma, accurate diagnosis is essential.

Causes and risk factors

• Ageing – most common after age 40
• Genetics – tendency can run in families
• Sun exposure – increases likelihood on exposed areas
• No link to infection – they are not warts and not contagious

Symptoms and appearance of Seborrhoeic Keratosis

• Waxy, wart-like, or rough surface
• Well-defined edges, often oval or round
• Colours ranging from pale to dark brown or black
• May itch, become inflamed, or catch on clothing
• Often multiple lesions in clusters

Seborrhoeic Keratosis Diagnosis

Diagnosis is clinical, based on examination and dermoscopy. In cases where a lesion appears atypical or suspicious for melanoma, a biopsy may be performed. Patients should seek assessment for any new, rapidly changing, or unusual pigmented lesion.

Treatment options for Seborrhoeic Keratosis

Treatment is usually not required unless symptoms or cosmetic concerns are present. Options include:

• Cryotherapy: Freezing with liquid nitrogen
• Curettage: Scraping off under local anaesthetic
• Electrocautery: Burning off with controlled heat
• Laser therapy: Precise removal of lesions

All treatments are safe and effective, though minor scarring or pigment changes can occasionally occur.

Living with seborrhoeic keratosis

While seborrhoeic keratoses do not pose health risks, they may affect appearance and self-confidence. They may also cause irritation, particularly in areas of friction. Patients are encouraged to seek medical advice if they notice sudden changes in size, colour, or shape, as these can mimic more serious conditions.

Your first visit — what to expect

1. History: Review of skin changes, family history, and sun exposure.
2. Examination: Dermoscopic inspection of lesions.
3. Diagnosis: Usually confirmed visually; biopsy if uncertainty remains.
4. Treatment options: Discuss cryotherapy, curettage, or laser if removal is requested.
5. Advice: Sun protection and skin self-monitoring guidance.

Reviewed by: Dr Mohammad Ghazavi, Consultant Dermatologist
Skinhorizon Clinic, 4 Clarendon Terrace, Maida Vale, London W9 1BZ
Last reviewed: 22 August 2025