FWIW I suspect this is a case of mass hysteria or other psychogenic illness but there really are microwave weapons out there in the real world, and the Havana s

FWIW I suspect this is a case of mass hysteria or other psychogenic illness but there really are microwave weapons out there in the real world, and the Havana syndrome symptoms are quite similar to the results of microwave attacks (or accidental exposure, eg a sailor who steps in front of a powerful radar array). In fact I suspect the growing awareness of microwave weaponry - which are sincerely terrifying - makes the prospect of psychogenic illness more likely. > If there exist an blood test as the article claim it's should point to an chemical source rather then an electromagnetic source of the illness That’s not true - an EM attack could conceivably affect the blood chemistry directly (radiation can destroy proteins and cause complex organic reactions). But the symptoms themselves will also leave biomarkers that can be picked up - hormones, transmitters, etc. Even if it was a case of mass hysteria you could probably design a low-sensitivity blood test around it.