One of my kids has the developmental disorder Autism. 
I'm not familiar with that condition, can you explain it a bit?
Sure! It tends to cause troubles with socializing, speaking, and functioning other ways. 
Oh that's unfortunate, is it curable?
Well-being contributing factors
Well-being is a much-studied topic in psychology, especially positive psychology. Related concepts are eudaimonia, happiness, flourishing, quality of life, contentment, and meaningful life.
Theories.
Central theories are Diener's tripartite model of subjective well-being, Ryff's Six-factor Model of Psychological Well-being, Corey Keyes' work on flourishing, and Seligman's contributions to positive psychology and his theories on "authentic happiness" and P.E.R.M.A.
Positive psychology is concerned with
Childhood disintegrative disorder
Childhood disintegrative disorder (CDD), also known as Heller's syndrome and disintegrative psychosis, is a rare condition characterized by late onset of developmental delays—or severe and sudden reversals—in language, social function, and motor skills. Researchers have not been successful in finding a cause for the disorder. CDD has some similarity to autism, and is sometimes considered a low-functioning form of it. In May 2013, the term CDD, along with other types of autism, was fused into a