Oppressed people face microaggressions in medicine. Extant discussions of microaggressions in medicine primarily focus on verbal and behavioral microaggressions, which typically have perpetrators. For example, in clinical medicine, acts of verbal and behavioral microaggressions can arise from patient-provider interactions, with healthcare providers such as physicians and nurses as perpetrators. However, in clinical medicine, patients can also be victims to environmental microaggressions, which typically are not acts and do not have perpetrators. My goal is to call attention to the existence of (...) environmental microaggressions in medicine in the forms of ordinary medical objects and spaces, such as forehead thermometers that are more likely to miss fevers in Black patients and medical imaging devices that do not fit the bodies of fat patients. With these examples, I argue that environmental microaggressions in medicine, in the form of oppressive medical objects and spaces, sustain oppression by shaping patterns of thought and action and exemplify a form of attributional ambiguity without any perpetrator. (shrink)