This is Dr. David
I am sorry your dad had these sypmtoms
it sounds like he most likely had a TIA or transient ischemic attack or a small temporary stroke which can cause temporary neurological symptoms like temporary paralysis, temporary tingling
he should see his doctors about this and see if he has risks for TIAs such as history of high blood pressure, diabetes, bad blood vessels, plaques in his carotid arteries, plaques in his heart or arteries, high cholesterol.
that is good he is going to see a doctor on Monday.
yes, it is safe to wait until Monday
he doesn't have these symptoms anymore.
he should be fine to wait until Monday
if he gets these symptoms again, or prolonged periods of weakness, numbness, personality changes, chest pains, shortness of breath, sweats, paralysis, then you should bring him to the A&E.
let me know if you have other questions.
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