I know all about tantrums I can assure you, we have had more than our fair show but this has gone beyond that
We have an hour of screaming/hyper-ventilating with anger/crossness and general rage against the world
She has been lovely at nursery all day (although half the group are off with chicken pox)
She was lovely and chatty on drive home.
Got home (not hungry.not tired) and she melted down (see it all before) but it has escaled to something that I really dont know how to deal with.
Started with her being horrible to her 5 month old baby brother, nipped that in the bud but unlike her to be spiteful (for all tantrum moments)
Then she went a bit hyperactive and generally naughty, standing up and bouncing up and down on his jumperoo thing (never does this), I told her not to and she lauged and pretty much said she would do as she pleased (too bright for own good) and even said that I could not stop her because I had "baby X"
Decided to ignore her after telling off. DH late home etc .. anyway now full blown uncontrollable screaming, literally cant do anything with her.
She is shouting and shouting with a look of hate in her eyes at me for a best friend of hers who left nursery a couple of months back 
She is now very very tired but I am shocked at how this has esclated and also at how cross I am with her 