PsO Severity

Patients were asked to self-report psoriasis severity [referred as body surface area (BSA)], using a single question: ‘How much Psoriasis do you currently have’. Response options included: None or very little psoriasis (Mild); Only a few patches that could be covered by one or two palms of your hand (Mild); Scattered patches that could be covered by between three and ten palms of your hand (Moderate); Extensive psoriasis covering large areas of the body that would be more than ten palms of your hand (Severe).