For some, anti-anxiety drugs are a necessary evil. Benzos are not suggested. They have too many negatives. First, one wants to do everything possible without drugs to reduce anxiety. Some need an SSRI or SNRI or tetracyclic med to settle down so they can stabilize their life a bit.

Some feed their anxiety by refusing to reduce the intensity of their lifestyle or the demands they put on themselves. No meds will overcome that.

One should try to journal all of the sources of anxiety and the triggers that make it worse plus assess daily activity levels. If one was living an intense and stressful life before the concussion, these issues will be more challenging.