This article uses conversation analysis to investigate the problem-presentation phase of 302 visits between primary-care physicians and patients with acute problems. It analyzes the social-interactional organization of problem presentation, focusing on how participants recognize and negotiate its completion. It argues that physicians and patients mutually orient to the presentation of current symptoms--that is, concrete symptoms presented as somehow being experienced in the here-and-now--as a locus of transition between the patient-controlled problem-presentation phase of the visit and the physician-controlled information-gathering phase. This is a resource for physicians to distinguish between complete and incomplete presentations, and for patients to manipulate this distinction.