I have just had flu on top of ME for the first time in 20 years. High fever, aches and pains congestion and sore throat lasted 2 weeks- some time bed bound completely. Now improving but the OI is so much worse- this morning BP was 99/64 lying pulse 71, but after standing for a few minutes and many error readings on BP machine it finally read 79/64 pulse 101. Has anyone else found that a new infection triggers a worsening of the autonomic dysfunction? I am using Energen C drinks and electrolyte solutions and adding more salt to my food. I am thinking my ME is worse due to the relapse caused by the flu virus can anyone else tell me they have experienced this?