Psoriasis Management Guidelines

Initial Treatment Approach

The American Academy of Dermatology recommends initiating treatment with high-potency topical corticosteroids combined with calcipotriene (vitamin D analog) for mild psoriasis (≤5% body surface area), achieving 58-92% clearance rates 1, 2
For body plaques, apply clobetasol propionate 0.05% or betamethasone dipropionate 0.05% twice daily for maximum 2-4 weeks 2, 3
For scalp involvement, use clobetasol propionate 0.05% shampoo twice weekly, providing rapid symptom relief within 3-4 weeks 2
For face, genitals, intertriginous areas, apply low-potency corticosteroids or topical calcineurin inhibitors to minimize atrophy risk 1, 2, 3

Fixed-combination products, such as calcipotriene/betamethasone dipropionate gel or foam, provide convenient once-daily application with proven efficacy for 4-12 weeks 1, 4
Separate product regimen: apply high-potency corticosteroid in morning and vitamin D analog in evening for enhanced effectiveness 1
Tazarotene addition: combine tazarotene with moderate-to-high potency corticosteroids to reduce irritation while enhancing efficacy for body plaques 1, 2, 3

Implement mandatory clinical review every 4 weeks during active treatment with no unsupervised repeat prescriptions for high-potency agents 2, 4
Limit moderate-potency corticosteroid use to maximum 100g per month 5, 2, 4
Require dermatological supervision for class 1-2 preparations 6, 5, 2

Escalate to systemic therapy when body surface area involvement exceeds 5%, inadequate response to optimized topical therapy after 8 weeks, or signs of erythrodermic or pustular psoriasis develop 2, 4
Photochemotherapy (PUVA) is the least toxic systemic agent and should be considered first-line systemic treatment, with starting dose at 70% of minimum phototoxic dose 7, 4
Methotrexate: response time 2 weeks; absolute contraindications include pregnancy, breastfeeding, wish to father children, significant hepatic damage, anemia, leucopenia, thrombocytopenia 7, 4
Acitretin (etretinate): response time 6 weeks; requires contraception with absolute contraindication for pregnancy or wish to conceive within 2 years of stopping treatment 7, 4
Cyclosporin: response time 3 weeks; contraindicated with abnormal renal function, uncontrolled hypertension, or malignancy 7, 4

Infliximab demonstrates rapid and often complete disease clearance for generalized pustular psoriasis and should be considered first-line biologic therapy, with standard dosing of 5 mg/kg infused at weeks 0, 2, and 6, then every 8 weeks thereafter 4
Never prescribe systemic corticosteroids for psoriasis, as they can precipitate erythrodermic psoriasis, generalized pustular psoriasis, or very unstable psoriasis when discontinued 4, 3
Consider acitretin as an alternative treatment option for pustular psoriasis 4

Systemic corticosteroids: can cause severe, potentially fatal deterioration when discontinued 4, 3
Lithium, chloroquine, mepacrine: associated with severe, potentially fatal psoriasis deterioration 6, 5, 3
Beta-blockers and NSAIDs: may worsen psoriasis in some patients 6, 5, 3
Alcohol: can precipitate or worsen psoriasis 6, 5, 3
Salicylic acid with calcipotriene: acidic pH inactivates calcipotriene and reduces effectiveness 1, 3