My little girl went through the same thing around that age...it was just her changing her routine and we had to adjust to it...once we did...all was fine!  Good luck, I know it can be trying at times.

All our 4 have had sleep issues at one time or another.  It could just be she is going through a rebellious stage and testing you.

Keep doing what you are doing and make sure you don't pick her up until she has calmed down.  If you pick her up during one of the screaming sessions, she is going to think that all she needs to do is scream to get you to come running.

If it were me, I'd ask her. I don't know how communicative she is but she would understand most basic things you talk to her about. Since she's a good sleeper generally, it may just be that she's going thru a patch where she doesn't need an afternoon nap. She may be up to a learning phase rather than a growth spurt (growth spurts need plenty of sleep). If she indicates she isn't tired & doesn't want a nap, try telling her that if she's good she can stay up a little longer. And then see how she goes. If she nods off in the middle of whatever she's doing, just cover her to keep her warm. And when she wakes up tell her you noticed she was tired after all. Same if she's grumpy-tired.

It could happen tho that she'll play happily & still sleep ok at nite.. then you'll just have to watch out for the next growth (need-more-sleep) phase & re-introduce the nap. Tell her what's happenning tho; its a time when they need to know what's going on & like to have some choices.. Regardless of how communicative they seem. My daughter was constantly moving, babbling & interacting at this age, my friend's daughter (same age) didn't speak a word, wanted continuous cuddles & needed naps. But both understood most of what was said to them & wanted choices.

Good luck!

Rosalinda

Wow, sounds like my son.  He does the same thing.  Always good at 2 naps no proplem but lately he just crys and crys and throws his toys out and dummy and nothing I do will make him sleep.   Most days now he will only have 1 long lunch time nap.

Maybe your child is ready to give up a nap and just have the 1 nap.  Try keeping her up until she is really tired and just put her down the same way as always and see what happens.

I reckon it is a sign that she is telling you she is ready for one nap. 

How many sleep is she having a day? If she is still having 2 sleeps she might be ready to cut back to one sleep a day - usually at lunchtime. Another thing you can try is laying with her on a bed or the floor. My oldest son stopped sleeping in his bed during the day around this age, so we let him lay and watch a movie on his little couch in the loungeroom & he would fall asleep there - perhaps you could try something like that.