But just out of curiosity, I checked my symptoms against one of those charts which help define the difference between a cold and the flu. Inevitably, it doesn't matter which chart I look at, they all want to know if my symptoms were sudden or gradual. This is where I always pause and debate . . . usually for so long that I have recovered from whatever-it-was before I make up my mind.
It's all in how you define "sudden".
Certainly, when I went to bed last night I did not know I was sick. When I woke up this morning, I still did not know it -- but I was at least surprised and confused by how bad I felt. It took me a good two hours to realize that I felt bad because I was sick. That would have "sudden" if I'd been smart enough to notice it when I woke up instead of when I got to work. I mean, it was awfully sudden. One minute I was worn out from a busy four day weekend and the next minute my bones were trying to implode . . . .
But it seems a little Gradual when I look at my whole week. I was extraordinarily tired Wednesday. I thought, at the time, that I had good reason to be tired. I had driven a several hours during the weekend, moved furniture on Monday, and did a little fencing practice Tuesday night. Of course I was tired! But then, I'd also slept in Tuesday and took a nap that afternoon, so normally I would expect Wednesday to have been the kind of day where I joke about having sore biceps and go on with my day. But I was dragging around like . . . . like a person coming down with something. So, maybe, after all, the "onset of symptoms" was gradual. If you count Wednesday as the day the first symptom (fatigue) arrived, and this morning as the time when the next symptom (body aches) showed up, and noon today as when I decided I was dying . . . well, that could be construed as Gradual.
Striking the Sudden/Gradual question from the list, all the other answers are "flu." So I have a flu. This being June, it's probably just -A- flu and not -THE- Flu, which is a good thing. I'll be home all day tomorrow if any good Samaratins want to drop by with chicken soup, Dvds, or medicinal booze. Especially the medicinal booze!