This paper seeks to determine the extent to which individuals with borderline personality disorders can be held morally responsible for a particular subset of their actions: disproportionate anger, aggressions and displays of temper. The rationale for focusing on these aspects lies in their widespread acknowledgment in the literature and their plausible primary association with blame directed at BPD patients. BPD individuals are indeed typically perceived as “difficult patients” (Sulzer 2015, Bodner et al. 2011), significantly more so than schizophrenic or depressive (...) patients (Markam 2003). The “responsibility question” for patients with BPD has already been raised (Martin 2010, Zachar & Potter 2009, Bray 2003), but this paper tackles it from a novel perspective. First, I narrow down the category of things for which the responsibility question is specific to individual with BPD. After that, I argue that some of the diagnosis criteria of BPD such as emotional instability or impulsivity might serve as excusing factors targeting the “control condition” on moral responsibility. Second, this paper also considers another widely accepted condition on moral responsibility: the epistemic condition. The view defended in the paper is that the answer to the responsibility question for individuals with BPD, concerning both the control condition and the epistemic condition, hinges on an understanding of their epistemic profile. (shrink)