Intellectual Development Disorder

Below average intelligence and set of life skills present before age 18.
Intellectual function can be measured with a test.
The main symptom is difficulty thinking and understanding. Life skills that can be impacted include certain conceptual, social, and practical skills.
Special education and behavioral therapy can help a person live to his or her fullest.


Cluster Number:
Wiki Number: W107
Diagnosis: Intellectual Development Disorder
US Patients: 2-3%
World Patients:
Sex Ratio:
Age Onset:
Brain Area:
Causes: Mental Retardation and Autism Spectrum make up the greatest proportions
Medications: antipsychotics and benzodiazepines
Therapies: careful analysis and years of good teaching; educable = IQ of 50-75;

Youtube Video:

What are the causes of Intellectual Developmental Disorder?

Amazon or Library Book: Job Readiness Workbook

Click the book to link or order from Amazon.

Support Group:

(This is a private group, entitled “Parents of Adults with Developmental Disabilities and Other Support Needs.”)

Contact your local Social Security office for possible Disability Benefits through their Disability Determination Services,

Section 12.05.


The world-wide medical research
reports chosen for each diagnosisĀ 

Clicking each title opens the
PubMed article’s summary-abstract.