What might cause a sign can’t drop in blood pressure?B

Post should say significant drop in BP

It is significant. First causes to consider are medication
interactions. Be careful to avoid falls while you await checking with your doctor.

That is very dangerously low....IF...it's an accurate measurement. You should consult a physician immediately, but it might be better to go to an ER right away. They'll actually act to help you rather than a GP who will just ask you to go to an ER or maybe write a scrip for you to go to fill...while you're a dangerous driver.

Thank you BP is back up to normal but still goes up when shingles pain recurs How darn long will the pain persist?

I don't know, never had shingles. My aged auntie did, and she said it was a horrible experience, one she wouldn't wish on anyone. She added, sternly, to get vaccinated. Both my wife and I have had both types of vaccine, the Shingrix and the Zostavax.

For those reading, and this is an aside...sorry...aged adults should/might need to get boosters of several kinds about the time they are looking forward to retirement (inquire of your GP):

Pneumonia
Diphtheria
Tetanus
Pertussis (yes, Ye Olde Whooping Cough!! Ask your pharmacist or doctor)
MMR (measles, mumps, and rubella)
Hepatitis (especially if you have never had any of them)
Shingles
Flu and RSV

We tend to have our eyes on other balls when nearing retirement, but there might not BE ONE if you get severely ill as your immune system ages. While it's still relatively young and responsive, expose it to these vaccines (that is my understanding of why it becomes more important for seniors, just as it is for kids)!

Please consult your family doctor or a nurse practitioner and find out if you have a deficit in your immunity.