The Psoriasis Symptom Inventory (PSI) is a validated patient-reported outcome instrument that was designed to quantify the patient’s perception of psoriasis signs and symptoms.

Use of the PSI in real-world dermatology clinics elicited meaningful discussions of psoriasis signs and symptoms between physicians and patients (treated and untreated and across a wide range of disease severity), improved patient perception of the treating physician, and influenced treatment decisions.

The PSI is a validated assessment tool that allows standardized objective evaluation of a patient’s perception of psoriasis signs and symptoms, and importantly, improves disease-specific communications between physician and patient.