Anxiety, Allergic Reaction PTSD, and Mental Health with Food Allergies. Welcome to my food allergy anxiety, allergic reaction PTSD, and mental health landing page. I hope you find some comfort in these posts, and know that you are not alone in feeling anxious or traumatized by prior allergic reactions or near encounters. It can be a difficult feeling to wrangle with. Please know that I am not a doctor, and that these posts are about my own experiences living with anaphylactic food allergies. They are not prescriptions for how someone should feel or act.