What causes low bp?

Cause of loe BP: Conditions that reduce blood volume, reduce cardiac output and BP meds are the main causes of low bp 1 dehydration, addison diseaes 2 moderate oe severe bleeding 3severe inflammation of organs and sepsis 4weak heart muscle, mi 5pericarditis 6pulmonary embolism 7bradycardia-slow heart rate 8heart block, sick sinus syndrome 9tachcardia 10drug toxicity 11 and finally meds used to treat high bp-quite comm.