This is the Practical Application for Targeted Cryotherapy of Keratinised Skin Lesions
Porokeratosis is an uncommon skin disorder characterised by superficial scaly patches or elevated rings with well-defined borders. The lesions can develop on sun-exposed sites, such as the arms and legs, and while many are benign, some become widespread, itchy, or cause cosmetic concerns. In rare instances, certain types have a small risk of transforming into skin cancer if left unchecked.
At Cryosonic Rickmansworth, we offer cryotherapy using CryoPen technology — a precise, non-invasive approach to help reduce or remove porokeratosis lesions with minimal impact on surrounding skin.
Porokeratosis is a group of skin conditions caused by unusual keratinisation (the process of skin cell production), leading to raised, roughened patches with a thin, threadlike border. These bumps may be brown, red or flesh-coloured and can occur as isolated spots or clustered groups.
Although the cause isn’t fully understood, factors such as sun exposure, genetics, and immune system changes are linked to the condition.
Many people have no significant symptoms beyond the appearance of lesions, while others may notice dryness, mild itching or cosmetic discomfort, especially in visible areas.
Cryotherapy is a well-established treatment option for porokeratosis lesions that are bothersome, symptomatic, or persistent. It does so by freezing the lesion — ideally to negative 100 degrees Celsius or lower — which stimulates the body’s own healing process to slough off the lesion.
Benefits include:
A treatment plan is tailored to your needs based on the number, size, and location of lesions. Repeat treatments may be needed for the best results.
What causes porokeratosis?
Porokeratosis arises from abnormal keratinisation of skin cells. Its specific cause is unknown, although it’s believed to be a byproduct of prolonged sun exposure, genetic factors, and immune system changes.
Is porokeratosis dangerous?
Most are benign, but some varieties pose a low risk of developing into skin cancer — especially if lesions change in size or appearance over time. For this reason, regular surveillance and sun protection are advised.
Will the lesions go away on their own?
There’s no known cure, and lesions don’t consistently disappear without treatment. Many remain stable for years and can be monitored if they are asymptomatic. Treatment is generally considered when lesions are symptomatic or cosmetically concerning.
Does cryotherapy hurt?
Cryotherapy with CryoPen is generally well tolerated. You might feel a quick chill or sting, but most people don’t have much, if any, discomfort.
How many times will I need to have treatment?
Treatment requirements vary by individual. Most patients improve after just one session, but this will depend on the size and number of lesions. Your clinician will let you know the best plan for your situation.
Can the lesions come back?
Porokeratosis can be chronic, and recurrences are possible. Treated lesions may resolve, but new ones can develop — particularly with continued sun exposure or underlying risk factors.
How can I help prevent new lesions?
To help minimise new lesion development:
Most importantly, consult a healthcare professional if you notice a change in size, colour or texture of a lesion.
If porokeratosis lesions are affecting your confidence or comfort, book a consultation with our expert team at Cryosonic Rickmansworth. Discover how targeted cryotherapy can be part of your management plan.