Autism--Wesley had all of these symptoms. Good therapy, good intervention specialists, and most of these symptoms have eased significantly.
Autism: What to Know and Signs to Watch For, Early Signs of Autism, Parenting Children with Special Needs, Amazing Series, Parenting Tips, Free Printables
Autism Red Flags - Xavier has demonstrates many of these behaviours; I guess we shouldn't have been surprised at its potential diagnosis.
Autism Signs... Because early intervention can make a world of difference
Study: Autism Signs Show Up As Early as Second Month of Age
Autism Signs and Symptoms Infographic
Nighttime Reading Center: Reading 4 Autism Sign Up
Teaching a Child with Autism Sign Language
Autism Signs & Symptoms
Autism signs & symptoms, qualities & quirks