There can be lots of reasons. When my Husband badly injured his foot we were in rehab for the first time and they put him on a tall chair and put his foot in a tank of water with stuff added to help debride the wound and his blood pressure dropped to the point that he fainted. Luckily I saw the change in his coloring and got a PT person in and we caught him as he slumped from the chair! They said it was because all of a sudden there was a rush of blood flow to the foot.
Poor circulation anywhere.
If the person has had high blood pressure in the past and has been on medication and they have a change in medical status it is possible they are getting a higher dose of medication than is needed. So over medicating can be a cause.
Another medication or supplement added to what is already being taken can cause a reaction.
This is just a few of some causes. This should be discussed with the doctor and if you can keep a log as to when this occurs it might help.
Ur Gmom has a lot of health problems. How often does her BP drop? Is she on BP medicine. Does it drop after giving her the pill. If so, I would call the doctor, she may need a lower dose.
My Moms dropped after having a good BM. I questioned this and forget what I was told but was told not a problem as long as it came back up.
When my Husband badly injured his foot we were in rehab for the first time and they put him on a tall chair and put his foot in a tank of water with stuff added to help debride the wound and his blood pressure dropped to the point that he fainted. Luckily I saw the change in his coloring and got a PT person in and we caught him as he slumped from the chair! They said it was because all of a sudden there was a rush of blood flow to the foot.
Poor circulation anywhere.
If the person has had high blood pressure in the past and has been on medication and they have a change in medical status it is possible they are getting a higher dose of medication than is needed. So over medicating can be a cause.
Another medication or supplement added to what is already being taken can cause a reaction.
This is just a few of some causes.
This should be discussed with the doctor and if you can keep a log as to when this occurs it might help.
My Moms dropped after having a good BM. I questioned this and forget what I was told but was told not a problem as long as it came back up.