What causes low blood pressure that prevents one from having proper devotion in prayer, and is there a cure for it?

Praiseworthy fear is that which prevents one from God's prohibitions, not that which hinders one from obedience. The Salaf feared God, and the effects of this were evident upon them without them experiencing what has afflicted you. Scholars have pointed out that whoever is unable to repel this state is excused, but this state is considered a deficiency, because if knowledge were strong, it would hold one back, and because it deviates from the path of the Companions and the Tabi'in. It is recommended to consult doctors and seek medical advice.