How LED Light Therapy Helps Psoriasis

Medically reviewed by Gabi, Aesthetic Clinician · Last reviewed 4 July 2026

Who Can Benefit?

Treatment Protocol

• Wavelengths: 633nm red + 830nm near-infrared
• Session duration: 20 minutes
• Frequency: 2-3 sessions per week
• Initial course: 10-12 sessions
• Assessment: Evaluate response after 4-6 weeks
• Maintenance: As needed based on response

Related Conditions

Understanding Psoriasis & LED Light Therapy

What is Psoriasis?

Psoriasis is a chronic autoimmune condition where the immune system mistakenly attacks healthy skin cells, causing them to multiply up to 10 times faster than normal. This rapid cell turnover creates thick, scaly plaques that are often itchy, painful, and inflamed. Psoriasis affects approximately 2-3% of the UK population - over 1.8 million people.

Types of Psoriasis

Plaque psoriasis (most common, 80-90% of cases) presents as raised, red patches covered with silver-white scales, typically on elbows, knees, scalp, and lower back. Guttate psoriasis appears as small, drop-shaped spots, often triggered by strep throat. Inverse psoriasis develops in skin folds (armpits, groin, under breasts) as smooth, red patches. Pustular psoriasis involves white pustules surrounded by red skin. Erythrodermic psoriasis is a severe, rare form covering large body areas.

The Autoimmune Connection

Psoriasis involves overactive T-cells that trigger excessive production of inflammatory cytokines (TNF-alpha, IL-17, IL-23). These cytokines drive rapid keratinocyte (skin cell) proliferation and inflammation, creating the characteristic plaques.

Triggers & Flare Factors

Common triggers include stress (major cause of flares), infections (especially strep throat), skin injuries (Koebner phenomenon), certain medications (beta-blockers, lithium, antimalarials), cold weather, alcohol consumption, and smoking. Identifying and managing your specific triggers is crucial for control.

How LED Light Therapy Helps Psoriasis

Anti-Inflammatory Action

Red light (633nm) and near-infrared (830nm) wavelengths reduce inflammatory cytokines (TNF-alpha, IL-6, IL-17) that drive psoriasis. By modulating the immune response, LED therapy helps calm flares and reduce plaque severity.

Normalized Cell Proliferation

LED therapy helps normalize the accelerated keratinocyte proliferation characteristic of psoriasis. While it doesn't slow cell turnover as dramatically as medications, it supports healthier, more organized cell growth patterns.

Improved Circulation

Enhanced blood flow from near-infrared light delivers oxygen and nutrients to affected skin while removing metabolic waste products. Better circulation supports healing and may help reduce plaque thickness over time.

Itch Relief

LED therapy modulates nerve sensitization, providing relief from the intense itching that often accompanies psoriasis. Reduced itch means less scratching, which prevents Koebner phenomenon (new plaques forming at injury sites).

UV-Free Alternative

Traditional phototherapy uses narrowband UVB light, which is effective but carries long-term risks (skin cancer, premature aging). LED therapy provides anti-inflammatory benefits without UV exposure, making it safer for long-term use.

Clinical Evidence for LED Therapy in Psoriasis

Research Findings

Studies on LED photobiomodulation for psoriasis show promise:

• 2017 pilot study: Red LED therapy improved PASI scores by 30-40% after 8 weeks
• Mechanism research: Demonstrated reduction in inflammatory markers (IL-17, TNF-alpha)
• Comparative studies: LED therapy showed benefits without the photosensitivity or burning risks of UVB
• Long-term follow-up: Improvements maintained with ongoing maintenance treatments

Comparison with Phototherapy

Narrowband UVB phototherapy is the established light-based treatment for psoriasis, offering 75-90% improvement in many patients. However, it requires 20-30 sessions, causes temporary redness/burning, and has long-term skin cancer risks. LED therapy is gentler, UV-free, and suitable for long-term use, though potentially less potent than UVB for severe psoriasis.

LED Therapy Treatment Protocol for Psoriasis

Initial Treatment Phase (Weeks 1-8)

Begin with 3-4 sessions per week for active psoriasis. Sessions last around 20 minutes, using red (633nm) and near-infrared (830nm) wavelengths over affected areas. Many people notice reduced inflammation and itch within 2-4 weeks.

Consolidation Phase (Weeks 8-16)

Continue 2-3 sessions weekly as plaques begin improving. Redness typically fades first, followed by gradual reduction in scaling and plaque thickness. Itching often improves before visible changes occur.

Maintenance Protocol

Once psoriasis is controlled, 1-2 sessions weekly or biweekly may help prevent flares. Maintenance needs vary greatly between individuals - some need weekly sessions, others monthly.

Combination with Standard Treatments

LED therapy can be used alongside topical steroids, vitamin D analogues, calcineurin inhibitors, and systemic medications. It may allow dose reduction of some medications over time (only under medical supervision).

What to Expect During LED Therapy

During Sessions

LED therapy is completely painless and relaxing. You'll lie comfortably while the LED panel delivers light to affected areas. No eye protection needed (unlike UV therapy). Sessions last around 20 minutes.

Immediate Effects

Some people feel warmth during treatment and notice temporary itch relief immediately after. Skin may appear slightly pink for 15-30 minutes post-treatment (normal response).

Timeline for Results

• Weeks 1-2: Reduced itching intensity, skin feels less inflamed
• Weeks 2-4: Redness begins fading, plaques feel flatter
• Weeks 4-8: Noticeable reduction in plaque thickness and scaling
• Weeks 8-12: Continued improvement, some plaques may clear significantly
• Month 3-6: Optimal improvement typically achieved by this point

Realistic Expectations

LED therapy is not a cure for psoriasis. It's a management tool that can reduce severity, control flares, and improve quality of life. Some people achieve 40-60% improvement, while others see modest benefits. It works best as part of a comprehensive psoriasis management plan.

Integrating LED Therapy with Psoriasis Treatment

Topical Medications

LED therapy enhances absorption of topical treatments:

• Topical steroids: Apply after LED session for better penetration
• Vitamin D analogues (calcipotriol): Combine with LED for synergistic benefits
• Coal tar: Traditional treatment that may work better with LED therapy
• Moisturizers: Critical for managing psoriasis - apply liberally after LED

Systemic Medications

For moderate-severe psoriasis on systemic medications (methotrexate, biologics, oral retinoids), LED therapy can be added as complementary treatment. Always inform your dermatologist about all treatments you're using.

Lifestyle Modifications

LED therapy works best alongside lifestyle changes:

• Stress management: Major flare trigger - try yoga, meditation, or counseling
• Healthy weight: Obesity worsens psoriasis, especially inverse psoriasis
• Limit alcohol: Alcohol triggers flares and reduces treatment effectiveness
• Don't smoke: Smoking worsens psoriasis and reduces treatment response
• Gentle skincare: Avoid harsh soaps, use mild cleansers and heavy moisturizers

Managing Psoriasis in London

Weather Effects

Many psoriasis sufferers notice improvements in summer (beneficial UV exposure) and worsening in winter (cold, dry air). London's damp climate can be challenging. Central heating dries skin further. Use humidifiers indoors and moisturize frequently, especially in winter.

NHS vs Private Treatment

The NHS provides excellent psoriasis care including phototherapy at hospital dermatology departments. However, waiting lists can be long. Private LED therapy offers immediate access and flexible scheduling, complementing NHS care.

Support Resources in London

Psoriasis Association UK provides support groups, information, and advocacy. Many London hospitals have specialist psoriasis clinics. Finding a supportive dermatologist who will work with you on combination approaches (including LED therapy) is valuable.

Cost & Treatment Investment

Financial Considerations

Psoriasis is a chronic condition requiring long-term management. While LED therapy requires investment, consider the costs of ongoing topical medications (£100-300/month), lost work due to flares, and impact on quality of life.

Home vs Professional Treatment

Home LED devices (£200-600) offer convenience but lower power output. Professional systems deliver 3-5x more energy in the same time. For active psoriasis, professional treatment provides faster results. Home devices may work for maintenance once controlled.

When LED Therapy May Not Be Enough

Severe Psoriasis

If psoriasis covers >10% body surface area or significantly impacts quality of life, systemic medications (biologics, methotrexate) may be necessary. LED therapy can complement but not replace systemic treatment for severe disease.

Psoriatic Arthritis

If you develop joint pain, stiffness, or swelling (psoriatic arthritis), see a rheumatologist promptly. Early treatment prevents joint damage. LED therapy may help joint symptoms but shouldn't delay appropriate medical evaluation.

When to See a Dermatologist

Rapid worsening, new severe symptoms, suspected infection, or psoriasis affecting face, hands, feet, or genitals all warrant dermatology assessment. LED therapy is complementary to, not a replacement for, medical care.

Why Choose LED Light Therapy UK in London?