No but very scary so get checked out.

Sometimes it can be lipidemea but you really should get with your doctor to check and see what's going on. It can also be a sign of a blood clot. I had that happen years ago and it wound up being a deep vein thrombosis DVP so you never know.

Yeah sometimes it last all day, sometimes only in the morning.

mine is often traceable to extra sodium intake, but ONLY ONE SIDE swells. My MS weak side. very little I can do to get it to go down...

No, but I hope you get it checked out and fixed.