Your panic attacks do sound similiar to mine - I get tingly and don't want to eat or drink. (Although, my therapist has advised me to drink water because it helps calm my body down. No one stops for a sip of water when being chased by a tiger. )

Do you have a therapist? CBT really helped me. My T told me to read more about anxiety. The more I learned, the more I knew I wasn't going crazy & that there were methods to help me work towards a better life.

It's hard, but you can do it.