My fiance's been having a continuous terrible headache fot the last few days, he was taken to the E.R. the other night as his blood pressure went up to 170; his back aches as well and as of two days he's been having very high fever too; they sent him back home but yesterday his fever and blood preassure went up again; they ruled out malaria; what can it be then? Sounds like there's a severe infection somewhere, but although they ran many blood tests on him, they couldn't come up with a conclusion yet; why is his blood pressure so high anyway? He lives in Italy by the way and he's Nigerian, if this can help. Thanks.