Outcome measure
Dermatology Life Quality Index (DLQI)
The Dermatology Life Quality Index (DLQI) is a 10-item patient-reported instrument scored 0–30 that measures the impact of skin conditions on quality of life. DLQI is widely used across dermatology trials including hyperhidrosis studies and is related to the HidroQoL instrument designed specifically for hyperhidrosis.
- Type
- patient reported
- Scale
- 0 – 30
- Consumer-facing?
- No
- Primary use
- quality-of-life impact in dermatology trials including hyperhidrosis
What DLQI captures
DLQI's ten items cover symptoms and feelings (itch, embarrassment), daily activities (clothing, shopping), leisure, work or school, personal relationships, and treatment burden. Higher scores indicate more impairment. Hyperhidrosis frequently produces meaningful DLQI scores even at moderate HDSS severity because of the social and work-life implications.
DLQI vs HidroQoL
HidroQoL is a hyperhidrosis-specific quality-of-life instrument designed to capture domains DLQI addresses generally for dermatology. Trials may use either or both; HidroQoL is more sensitive to hyperhidrosis-specific impact but DLQI's broader dermatology validation supports cross-condition comparison.