http://autism.about.com/od/aspergerssyndrome/fl/Why-High-Functioning-Autism-Is-So-Challenging.htm
Individuals with ASD experience challenges that may differ in characteristics...

Communication Difficulties
Understanding non-verbal communication
Processing verbal information
Switching focus from one person to another in a group conversation
Understanding body language
Practicing appropriate conversation etiquette
Socialization Challenges
Making and keeping eye contact
Participating in group activities
Understanding social convention
Executive Function Deficits
Planning
Organizing
Making decisions
Shifting to a thought or action
Handling changes in routines, schedules
Feeling comfortable in new environments
Understanding non-verbal communication
Processing verbal information
Switching focus from one person to another in a group conversation
Understanding body language
Practicing appropriate conversation etiquette
Socialization Challenges
Making and keeping eye contact
Participating in group activities
Understanding social convention
Executive Function Deficits
Planning
Organizing
Making decisions
Shifting to a thought or action
Handling changes in routines, schedules
Feeling comfortable in new environments