11 year old girl aggressive towards sibling

Hi everyone. I need help and advice. My currently undiagnosed asd girl is having severe trouble with noise. If her sister (7) makes any kind of vocal noise she immediately gets aggressive and agitated. She will then fly into a rage and scream at her to shut up or try to physically hurt her. 

She has taken to being aggressive towards her out of the blue to the point her sister is scared of her and I am worried that someone will get hurt ie if she were to hit or push her near the stairs or her sister were to defend herself and hurt her too. 

I can't have them in the same room together and being in the car is awful with the constant bickering and lashing out at her sister. Its like she hates everything her sister does. 

I just cry all the time because I am just so out of my depth and no idea how to advocate for both of my children. 

Parents
  • I read an article a while ago, about a little girl who was similar in behavior to your daughter, because noises of her sibling was overwhelming to her, she would get angry and aggressive towards her sibling, but she'd also have trouble concentrating in school, and making cause and effect connections. This little girl was diagnosed with adhd, and after she took adhd medication, her mood was more balanced, she could get along with her sibling, she showed empathy and started doing things to show care to her sibling and mother, she could make cause and effect connections in books and understand the motives behind the characters. However when the adhd medication started wearing off, she would start to feel overwhelmed and unhappy about the noise level again, and she'd be very uncomfortable, until it was time to receive another dose. If I can find the article I'll post it to you.

    And to be honest, your daughter might have autism and adhd, or it could be one or the other, or it could be something completely different, but I hope she gets properly diagnosed, so that there's suitable treatment for her.

Reply
  • I read an article a while ago, about a little girl who was similar in behavior to your daughter, because noises of her sibling was overwhelming to her, she would get angry and aggressive towards her sibling, but she'd also have trouble concentrating in school, and making cause and effect connections. This little girl was diagnosed with adhd, and after she took adhd medication, her mood was more balanced, she could get along with her sibling, she showed empathy and started doing things to show care to her sibling and mother, she could make cause and effect connections in books and understand the motives behind the characters. However when the adhd medication started wearing off, she would start to feel overwhelmed and unhappy about the noise level again, and she'd be very uncomfortable, until it was time to receive another dose. If I can find the article I'll post it to you.

    And to be honest, your daughter might have autism and adhd, or it could be one or the other, or it could be something completely different, but I hope she gets properly diagnosed, so that there's suitable treatment for her.

Children
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