I have anxiety too. It came out of nowhere, and I had been to the doctor for test after test after test because I was experiencing physical symptoms that kept being diagnosed as an inner ear infection and sinus infection. Come to find out I had severe anxiety as a result of abuse that happened as a child. I had repressed a lot of memories and pain from growing up in a heroin house. Something triggered some of these memories, and I had blocked out a lot of my past. The anxiety and attacks was a result of repressed memories that were being triggered by everyday activities. I have been going to therapy and dealing with the past that I hadn't even remembered, and now I haven't had an anxiety attack in 5 months!!