Wow, my gilr is 17 months and has been sleeping good so far...I hope this does not happen, but if it does I will not feel alone!
Anyway, I actually had a couple of little incidents recently, which got solved pretty easily, but here it is:
I gave her 1 or 2 extra feedings. One time she would not go down at 8pm, the usual time. She had dinner at 6:30 and was quite a lot of food, but I tried again and she ate so much I was surprised! Then she went to sleep with no problem.
Another time in the middle of the night she woke up and made the sign for food. Very weird because this never happened, but I thought what the heck, and I feed her some cheese and cherios, a little milk - basically quite a snack!, then she went to bed.
Yesterday she would not go down for her nap but was kind of fussy, so I gave her food AGAIN, and she was happy as a clam, eating and eating. She ended up skipping the nap, but slept through the night.
So, I don't know, maybe those growth spurts they talk about when they are newborns keep going on and off...At least that's what it seems to me in this case.
Try it and good luck!!!!!!!!!
P.S. If you take your kid to a day care or do not have your kid watched by you all day, maybe something happened there. Like one time my crazy Italian dad was here from Italy visiting me and the baby, and when she was fussy he said "You can dip her pacifier in some vodka then give it to her, so she can calm down." I could not believe he said that (funny in a way...maybe that's what I got when I was fussy??!), but I wondered if I was not there would he have done that? And would I have ever found out? And would my baby have had some reaction? Anyway, I just thought about this as a note.