Children with ADHD and LD tend to have a difficult time learning common social skills. This in turn can result in the child's inability to form lasting friendships with his peers. In my own experience with my son, I've seen this happen and it's heart breaking. It isn't anything that he does intentionally though.

He has a hard time knowing when someone is just "kidding" or when it's actually sarcasm. Therefore, he tends to assume everything that his peers say to him is sarcastic. He takes things literally no matter what. He also can not read facial expressions and tends to invade other people's personal space. This is all related to his having ADHD and LD.

I have found that girls tend to relate better to my son than boys.  The majority of the friends he has are girls, older girls.  They seem to be more mature and patient with him.  His peers, who are boys, on the other hand, tend to point out his differences and make fun of him.  This again, I think, is related to their inmaturity. 

In an effort to teach my son social skills and social cues,I have found several resources that deal specifically with this issue. Also, a few children's books that relate to this issue as well.  Hopefully, you'll find just what you're looking for to help your child somewhere in the following list of websites.

• Learning Difficulties and Social Skills: What’s the Connection?
• Social Connections: A Parent's Quiz
• How to Help a Child with Learning Disabilities Who is Lonely
• Social Skills for Girls with ADHD
• LD Online articles
• Children with ADHD: Social Skills 101

There is also a book written especially for 9 - 12 year olds entitled Jarvis Clutch - Social Spy, by Dr. Melvin Levine. It focuses on making and keeping friends.