Researchers examined questions of caregivers for individuals with posttraumatic stress disorder (PTSD) by means of a) a content analysis and b) a thematic analysis of posts on an online peer support forum. A total of 292 question posts were analyzed. Content analysis categories were based on previous research and included question motivation (cognitive, emotional, and social) and content (symptoms, prognosis, medication/treatment, coping, support, and seeking reassurance). Three newly identified themes (PTSD behavior identification and response, interpersonal interactions with trauma survivors, and healthcare system concerns) were generated through the thematic analysis. These overarching themes regarding information needs, and their subcategories, are discussed in detail. This study provides a preliminary examination of the information needs of PTSD caregivers, offers suggestions for future research, and discusses implications for the healthcare system.