Psoriasis: Triggers, Treatment Ladder & Lifestyle Management

Psoriasis is a chronic immune-mediated inflammatory skin disease affecting 2–3% of populations. While incurable, it is highly manageable with modern therapies.

Common Flare Triggers

• Stress (neuroimmune axis).
• Skin trauma (Koebner phenomenon).
• Infections (streptococcal → guttate flare).
• Medications (beta-blockers, lithium, antimalarials, NSAIDs, ACE inhibitors).
• Alcohol & smoking (dose-dependent worsening).
• Weather (cold/dry winter flares).
• Obesity (adipokine-driven inflammation).

Treatment Ladder (Stepwise)

1. Topical (mild-localized): Corticosteroids, vitamin D analogs (calcipotriene), combination (calcipotriene/betamethasone), tazarotene, calcineurin inhibitors (face/folds).
2. Phototherapy (moderate-widespread): NB-UVB (311 nm) 3×/week; PUVA (psoralen+UVA) for resistant.
3. Systemic traditional (moderate-severe): Methotrexate, cyclosporine, acitretin, apremilast (PDE4 inhibitor).
4. Biologics (moderate-severe, inadequate response):
   • TNF-α inhibitors (adalimumab, etanercept, infliximab, certolizumab).
   • IL-17 inhibitors (secukinumab, ixekizumab, brodalumab).
   • IL-23 inhibitors (guselkumab, risankizumab, tildrakizumab).
   • IL-12/23 inhibitor (ustekinumab).

Lifestyle Adjuncts

• Daily moisturization (ceramide-containing).
• Mediterranean diet / weight loss if BMI >25.
• Stress reduction (CBT, mindfulness).
• Smoking cessation, alcohol moderation.
• Sun protection (paradox: UV helps psoriasis but increases cancer risk).

Comorbidity Screening

Psoriatic arthritis (30%), metabolic syndrome, CVD, depression, IBD, uveitis. Annual rheumatology screen; cardiometabolic monitoring.