Dermatology Life Quality Index
Pronunciation: D-L-Q-I (spelled out)
Also written as: DLQI — Dermatology Life Quality Index
A validated 10-item patient-reported outcome questionnaire measuring the impact of skin disease on health-related quality of life.
Full Definition
The Dermatology Life Quality Index (DLQI) is the most widely used dermatology-specific patient-reported outcome (PRO) instrument, comprising ten questions across six domains: symptoms and feelings, daily activities, leisure, work and school, personal relationships, and treatment burden. Scores range from 0 (no impact) to 30 (maximum impact). It is a mandatory outcome measure in many clinical trials and health technology assessments (HTAs) for biologic therapies. Editors must note that 'DLQI' is the correct abbreviation (not 'DLQ1' or 'DQLI') and that while 'DLQI' appears in the database as an existing term, this full-form entry documents the complete name for editorial cross-referencing. Strictly do not duplicate the existing DLQI entry; this entry covers the full unabbreviated form as a distinct editorial matter.
Usage
Usage note: Spell out in full on first mention with acronym in parentheses. Common error: 'DLQ1' (digit 1 instead of letter I) — verify carefully in proofing.
In Context
- "The Dermatology Life Quality Index score improved from 18 at baseline to 4 at week 16, indicating near-complete resolution of disease impact." — Clinical trial efficacy table
- "Regulatory submissions for biologic agents in psoriasis must include Dermatology Life Quality Index data as a co-primary or secondary endpoint." — Regulatory writing guidance