I have been dealing with this for almost a year. There were some events that I think kicked it off. Maybe worse since the pandemic started. But! What has been really helpful is understanding that anxiety is showing up in the body because the body does not feel safe. Anxiety is a message to the brain! And sometimes that mechanism gets all fked up and misfires.
Doing somatic therapy with a therapist that I really like and think values my concerns has been helpful. I do body and environmental awareness exercises. These help me increase my sense of safety and trust of myself. It's gotten about 15% better since I started. I hope you feel relief soon. Shit is so hard.