Do you know someone with a developmental disorder? This can be trying.
No i do not. But i know it is a  psychiatric conditions originating in childhood that involve serious impairment in different areas and no one wish t have such 
Yeah same. I'm kind of interested in the medical part of Developmental disorder though.
That is what i am talking about. You can use the term in several ways 
Tell me more about what you know of this.
You can also call it "Specific Disorders of Psychological Development"  when you are in the ICD-10.
It's definnitely a psychological issue. Probably also a genetic issue during the formation of the fetus.
It could be a genetic issue as it affects so many part of humans like language disorders, learning disorders, motor disorders and autism spectrum disorders.