I’m not sure if I’m going crazy or if this is common with panic disorder, but before I have a panic attack (or leading into one), I always feel this overwhelming sense of deja vu, like I’ve already somehow experienced or seen exactly what is happening. This is accompanied by my heart pounding, headache, nausea, and overall feeling disoriented. I tried to do some google-ing but came up short, as there isn’t much info on this. I’m wondering if others have experienced this, or if there is any information out there. 

For context, I have anxiety, depression, and panic disorder. I am already on medication and have been doing CBT therapy for over a year. I’m taking leave from work right now so I can focus on my MH.