DDs behaviour with other children

[sodrained]

Hi I have a nearly 5 year old DD she's just started reception had a really good week there no issues no problems, until today the teacher called me to say she has hurt 3 separate children for no reason at all. She is so spiteful to other children and I have no idea why. She is always sorry and remorseful even the teacher said she was, so why do it? I am so frustrated as she was doing so well. It doesn't matter if the children are twice her size, older than her she just doesn't care I'm really upset about it all. I have another child who is nearly 3, he has his moments but he doesn't go for other kids like my DD does?.

I'm worried she has ADHD I think that's me just worrying though, as she's a very happy child majority of the time is kind and caring, really helpful and very loving but this torwards other children is always random. For example we was at the bus stop a few months ago and she pinched this boy for no reason at all.

@sodrained I've been there! Dd was a nightmare at school from age 4-6 , spiteful, bossy, almost weekly she'd do something naughty or hurtful that the teacher would call me aside.

Is she youngest in the class? My dd is now 7 and many of the issues have cleared up. Could it be jealousy as she is at school all day and your with her sibling?
Have the school said anything?

@Ellieboolou33 Hiya thanks for the reply I don't know if she's the youngest but it just doesn't stop, after I posted this we went to Sainsbury's and she did it again stole some lady's walking stick and run of with it . I'm glad to hear about your DD getting better as she got older I'm hoping this is what happens with her, but I can't see it now. I'm not sure if it's jealousy because I treat them both the same x