1. Autism  (Trust Mark: Doctor-Reviewed)
Autism is a developmental disorder that appears in the first 3 years of life, and affects the brain's normal development of social and communication skills.• Reviewer: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Paranoid personality disorder  (Trust Mark: Doctor-Reviewed)
People with paranoid personality disorder (PPD) have long-term, widespread and unwarranted suspicions that other people are hostile, threatening or demeaning. These beliefs are steadfastly maintained in the absence of any real supporting evidence....• Author: Dean A. Haycock Ph.D.