Whenever I'm alone at home lately I feel like I'm having a constant panic attack and can't function. My heart is constantly beating hard and I feel like I have to cry all the time and I feel awful. What is this? I got anxious like this a few years ago when I felt unstable and felt like I never had enough money for rent, but I'm happy now and am happy with my job and house. It happens even when I'm medicated, I take paroxetine everyday. It genuinely just feels like an all day long panic attack and I dont know what triggers this, I just want to relax at home and then this happens.