Hi @hral. As a fellow EBV remission/post covid 2 yr person who appears to have similar past reactions, suggestion not knowing past posts🙃 , you may find helpful MCAS food lists on the web as I had to do while waiting for medical appointment/assistance. Know everything is beyond daunting and hopeful you can start with eliminating high histamine obvious foods you currently eat that will give you relief and then find your personal triggers for future prevention. 🌈