Acta Derm Venereol. 2021 Jun 23. doi: 10.2340/00015555-3849. Online ahead of print. ABSTRACT The exact mechanisms of rosacea development are unknown, but it has been suggested that tea consumption may be associated with its development. To determine the relationship between tea drinking behaviour and rosacea, this clinical case-control study recruited 2,063 participants, who completed a questionnaire about tea drinking behaviour. A 1:1 ratio propensity score matching method was used to generate