I've known people who for example don't seem to be aware of rules of courtesy in social situations. A girl I work with will ask questions of peoples personal life that normally people don't ask out of respect for privacy. Such as 'how much do you make an hour?' or 'you were gone for a few days because of illness. Why?'. This girl is somewhat handicapped and lives in an assisted living environment.

We were talking at work one day when a co-worker said he had a son who was gay and had a boyfriend whom he would bring to the parents house for dinner occasionally. Being a typical father he loved his son anyway but another worker made the comment 'I'll bet you are really ashamed of that!' saying it not in any mean way at all but just making an observation.

My question-Is there a name for lacking in social skill like this or is it just a matter of immaturity or whatever? I have my own problems with social intelligence sometimes so that's why I ask. If there is a name or category for it then maybe there's a way towards improvement.