Perianal Crohn's Disease Activity Index Questionnaire

**Semantic type:** Intellectual Product

**Definition:** A standardized five-item questionnaire, published by Irvine et al. in 1995, that utilizes a five-point rating scale to assess the severity and complexity of five frequent features of Crohn's disease affecting the perianal area.

**Synonyms:** - PDAI - PDAI - PDAI01