This paper deals with the non-temporal values of the interrogative form desde cuándo (≈ 'since when') in expressive utterances.According to the theoretical framework of Cognitive Linguistics, these cases can be characterized as pragmaticalized i.e. showing the speaker's subjectivity.In this way, desde cuándo becomes a discourse marker suggesting some kind of discordance.We describe the uses of this linguistic form by analyzing a corpus of utterances.Such study allows us to propose a first typology of the uses of this marker.