Hello @pureprousa,

I'm sorry to hear that you son is still dealing with a high fever and bed rest. How old is your son?

Do you live near a university medical center and/or a Mayo facility where you can get a second opinion?

Here is a Mayo Clinic video about this condition along with treatment options:
https://www.mayoclinic.org/diseases-conditions/pericarditis/multimedia/treating-pericarditis-video/vid-20139209