The local production of knowledge: disease labels, identities and category entitlements in ME support group talk.

This article uses discursive psychology to analyse how knowledge claims and entitlements are locally produced in an ME support group meeting and a research interview. The article demonstrates how 'expertise' and 'experience' associated with lay and professional membership are locally constituted in the activity of reasoning, arguing and claims making. The analysis shows how expertise and experiential claims are constructed, disclaimed, warranted and undermined in relationship to membership categorization and entitlements to knowledge that are co-constructed in the process of a discussion about disease labels and the nature of the illness as physical or psychological. In a discussion about the definition of contested disease categories, what is 'at stake' for the group members is the entitlement to speak from experience as members who can 'know' their own minds.