Psoriasis is a long-term skin condition that affects around 2–3% of people worldwide, including many New Zealanders. It can appear at any age, although it often begins in early adulthood. Characterised by red, scaly patches of skin, psoriasis is more than just a cosmetic issue — it can cause itching, discomfort, and, in some cases, affect self-esteem and quality of life.
At SkinCentre, our Dermatologists understand the impact psoriasis can have, both physically and emotionally. While there is currently no cure, modern Dermatology offers a wide range of effective treatments that can control flare-ups and significantly improve day-to-day life.
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What Causes Psoriasis?
Psoriasis is caused by an overactive immune system, which speeds up the life cycle of skin cells. Instead of taking about a month for new skin cells to form and shed, in psoriasis this process happens in just a few days. The result is a build-up of thick, scaly patches.
While the exact triggers vary, common contributing factors include:
- Genetics – psoriasis often runs in families.
- Immune system dysfunction – overactive T-cells drive inflammation.
- Environmental triggers – infections, stress, certain medications, alcohol, and cold weather.
- Skin trauma – psoriasis may develop at sites of injury (the “Koebner phenomenon”).
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Symptoms of Psoriasis
Psoriasis appears in different forms, the most common being plaque psoriasis, which presents as raised red patches with silvery-white scales. Other types include:
- Guttate psoriasis – small, drop-like lesions, often triggered by throat infections.
- Inverse psoriasis – smooth red patches in skin folds (such as the armpits or groin).
- Pustular psoriasis – white pustules surrounded by inflamed skin.
- Erythrodermic psoriasis – a rare but severe form causing widespread redness and scaling.
- Psoriasis can also affect the nails (causing pitting, thickening, or separation) and the joints (psoriatic arthritis), which may cause pain, swelling, and stiffness.
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Diagnosis at SkinCentre
Psoriasis is usually diagnosed through a clinical examination by a Dermatologist. In some cases, a skin biopsy may be taken to confirm the diagnosis and rule out other conditions such as eczema or fungal infection.
Dermatologists at SkinCentre will also assess for associated conditions, as people with psoriasis are at higher risk of arthritis, cardiovascular disease, and metabolic syndrome.
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Treatment Options for Psoriasis
Although psoriasis cannot be cured, effective treatments can bring it under control and keep flare-ups at bay. Treatment choice depends on the severity, type, and location of psoriasis, as well as the patient’s overall health.
- Topical Treatments
- Corticosteroid creams and ointments – reduce inflammation and scaling.
- Vitamin D analogues (such as calcipotriol) – slow down skin cell growth.
- Coal tar and salicylic acid preparations – help soften thick scales.
- Moisturisers – reduce dryness and improve skin comfort.
- Phototherapy
- Narrowband UVB light treatment – delivered under medical supervision, phototherapy slows skin cell turnover and reduces scaling.
- Systemic Treatments
- For moderate to severe psoriasis:
- Oral medications (such as methotrexate, cyclosporine, or acitretin).
- Biologic therapies – advanced injectable treatments that target specific parts of the immune system driving psoriasis. These can be highly effective in controlling symptoms when other treatments have failed.
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Living with Psoriasis
Psoriasis is a visible condition that can affect confidence, relationships, and overall quality of life. Flare-ups may come and go unpredictably, making it feel difficult to manage without support.
At SkinCentre, we work with patients to create personalised treatment plans, combining medical therapy with lifestyle strategies such as stress management, maintaining a healthy weight, and avoiding triggers. Many patients find that with the right combination of treatments, their skin clears significantly and their confidence improves.
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Frequently Asked Questions
Is psoriasis contagious?
No. Psoriasis is not an infection and cannot be passed from person to person.
Can diet affect psoriasis?
While no diet cures psoriasis, maintaining a healthy weight, reducing alcohol, and eating an anti-inflammatory diet may help reduce flare-ups.
Does psoriasis affect more than the skin?
Yes. Psoriasis can affect nails and joints, and is linked with other health conditions such as heart disease and diabetes.
Will I always have psoriasis?
Psoriasis is usually a lifelong condition, but with treatment, many people experience long periods of remission and clear skin.
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Psoriasis can be challenging, but it doesn’t have to control your life. With expert care and modern treatments, flare-ups can be minimised and skin health significantly improved.
👉 If you are living with psoriasis and want effective solutions, book an appointment with the Dermatologists at SkinCentre today. Together, we can find the right treatment plan to help you achieve clearer, more comfortable skin.