Why do disorders like schizophrenia or bipolar typically only appear in adolescence and not childhood?

Question

For example, schizophrenia typically appears around the 20s, but is rare in childhood. Why is it so rare to see in childhood?

In: Biology

Answer 1

I feel during childhood, the brain is still developing, and many of the brain functions that are involved in these disorders aren’t fully active yet. As they grow up, their brains undergo changes and this changes can sometimes trigger the onset of mental disorders if someone is genetically predisposed of it.