Developmental disability
Developmental disabilities can make some things harder. Some people can't speak out loud. Some people need extra help learning how to read.  Developmental disabilities can be mental or physical or both. Sometimes developmental disability can be diagnosed when someone is young. For example, if a child has trouble walking, they might have a developmental disability. Sometimes developmental disability isn't diagnosed until later. For example, some autistic people are diagnosed as adults. They were still autistic as babies, but it is hard to tell sometimes.