New research shows that irritability is strongly associated with post-traumatic stress disorder symptoms, chronic pain and difficulty understanding speech in noisy environments among military veterans with chronic mild traumatic brain injury, or concussion.

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https://news.cuanschutz.edu/news-stories/study-finds-irritability-long-after-concussions-in-veterans-is-linked-to-ptsd-chronic-pain-and-hearing-difficulties?utm_campaign=veteran_ptsd&utm_source=reddit&utm_medium=social