Hello thanks for posting at HCM. So the main complaint is giddiness in a BP patient with history of stroke. Giddiness can be caused by some blood pressure medications. It would be very useful if you provide details like when he has the giddiness i.e. while walking or abruptly standing up from bed or lying etc. Some BP medications can cause postural hypotension which can cause giddiness on suddenly getting up from sitting or lying position. To prevent this he must get up slowly from lying position, sit for a minute, then stand up slowly and wait near the bed or sofa for about 30 secs. This will prevent giddiness episodes. Also if he is on diuretics (water pills)like lasix or thiazide, the blood volume gets depleted due to increased urine and patient becomes dehydrated which may again cause giddiness. In that case diuretics should be given at lower doses or stopped and changed to other drugs as required. Another cause can be internal ear issues which causes vertigo and dizziness. In this case giddiness can occur at any time, mostly with motion and rotational issues. Please get an ENT consult for the same. Cerival spine issues can also cause giddiness, so please get a x ray of the cervial spine (neck). Please revert back with the above advice. I don t think the giddiness is related to the history of stroke. Wishing you good health Regards