I have had a virus for the last three weeks and over the last week, a headache. My blood pressure is elevated and I am concerned about this, as I usually have quite low blood pressure. Can a virus like this (starting with sore throat, cough and blowing a lot of bright green mucus from the nose) be a cause of sudden elevated blood pressuer? I have, in the past, had sinusitis, although I don't know if I have sinusitis this time, as my cheeks and top of my nose are not hurting.