The article aims at elaborating a non-speculative concept of social pathology. In the first section, various conceptualizations (e.g. Habermas, Honneth) are critically revaluated. It is argued that (a) applying the originally medical concept of ‘pathology’ on social entities has untenable connotations (due to the lacking social equivalent of death); (b) grounding social pathology on the level of ‘social suffering’ is not in accordance with the actors’ horizon shaped by biomedical- and psy-discourses. To avoid these dead-ends, social pathologies are reinterpreted as (...) structural distortions causing diseases or mental disorders. To refine this initial definition, in the second section, Merleau-Ponty’s concept of chiasm is used as an ontological framework translating between medical and social diagnoses. The proposed concept of social pathology refers to those patterns of disrupted pre-intentional, intentional and mediated intertwining, which manifest as ill or psychopathological chiasm. In the third section, two case studies are elaborated: the intersubjective structures of depressed and asthmatic chiasm. Finally, the implications for critical theory and praxis are overviewed. (shrink)