Using virtual reality (VR) in an experimental setting, we analyse how communicating more openly about a medical incident influences patients' feelings and behavioural intentions. Using VR headsets, participants were immersed in an actual hospital room where they were told by a physician that a medical incident had occurred. In a given scenario, half of the participants were confronted by a physician who communicated openly about the medical incident, while the other half were confronted with the exact same scenario except that the physician employed a very defensive communication strategy. The employed technology allowed us to keep everything else in the environment constant. Participants exposed to open disclosure were significantly more likely to take further steps (such as contacting a lawyer to discuss options and filing a complaint against the hospital) and express more feelings of blame against the physician. At the same time, these participants rated the physician's communication skills and general impression more highly than those who were confronted with a defensive physician. Nevertheless, communicating openly about the medical incident does not affect trust in the physician and his competence, perceived incident severity and likelihood of changing physician and filing suit.