Welcome to the Caregivers Forum. Please accept my sincere apology for being to tardy in my response.
How is your father now? These "flu like" attacks should not be dismissed. Has he been seen by his PCP or taken to ER? I am wondering if these are TIA (transient ischemic attack).
A (TIA) is often labeled “mini-stroke,” it is more accurately characterized as a “warning stroke,” a warning you should take very seriously. This occurs when small clots pass through the brain and they symptoms are transient. They can precede a CVA (cerebrovascular accident) better known as a stroke. Some ppl can have TIAs for years and never experience a CVA. Other ppl have several TIAs and then experience a CVA. So please don't dismiss his symptoms.
I am far from am expert and he may not be having TIA episodes. But at 88 please don't take the chance. I hope you will let us know how he is doing. I will look forward to your updates with interest.