Getting introduced to PDD
PDD simplified is pervasive developmental disorders, of which, it’s Autism that enjoys currently being the center of attention, despite other four being characterized by similar abnormalities regarding social interactions, communication, restricted interests and repetitive behavior. Thus, anyone displaying these disorders must not get labeled as an autistic individual essentially; a proper diagnosis may prove any of the other four to be prevalent.
That way, Asperger’s syndrome comes the closest; it has signs and likely causes that are often indistinguishable from autism. The psychiatric disorder is usually noted during early school years; characterized by impaired social relations and by repetitive patterns of behavior. Similarly, Rett syndrome shares it’s symptoms with autism’s childhood disintegrative disorders, though it may have several unrelated causes.
But PDD is otherwise specified when there’s absent a criteria that points directly towards a more specific disorder; this is when the term ASD (autism spectrum disorders) is used more profusely along with a description of the intensity of the disorder. These are LFA, MFA, and HFA, denoting low-, medium- or high-functioning autism. The comparison is drawn by comparing the IQ thresholds, but often Autism stays present with very little or no syndromes making detection and treatment a difficult phenomenon.
This proves all the more the necessities behind finding the causes of autism by identifying the biological conditions, for which, psychiatry, psychology, neurology and pediatrics need to traverse some more distance. Newer technologies are definitely bringing in new hopes (e.g. fMRI) in helping to identify phenotypes that are biologically-relevant and such technologies in the lines of brain scans are helping further the neuro-genetic studies that may reveal autism under a whole new brighter light. So far, fMRI (functional magnetic resonance imaging) has been able to classify Type 1 autism as the result of a mutation in the CNTNAP2 gene; we are waiting to see the advanced explanations to show up and abolish completely the dilemma on the disorder pushing myriads into the dark labyrinths of hopelessness.

