It may help your child and others around them to understand why they may experience certain differences and difficulties and how to support their needs.
It may provide insight into any existing mental health challenges.
It may help you to access appropriate services and benefits to support them.
Reasonable adjustments can be put in place in the educational setting.
It can enable them to gain more tailored ongoing support, for example therapists may choose different techniques and counselling models.
It may help individuals with a more internalised or subtle autistic profile.
You might need a diagnosis to join some social groups.
Although you don’t need to be diagnosed to have self-belief, some autistic people welcome the diagnosis as a way of making sense of their life experiences and being able to identify with other autistic people.