chili052 wrote:This may be a strange question but for those of you who have been diagnosed with SPD or who believe you have SPD, do your parents and/or family members know or understand that you have this disorder?
Heh, they know my disorder
all too well from first-hand experience.

It took a while for them to be able to put a label on all the attributes (though a few in my family are in the mental health field and had a good idea all along).
The characteristics state that those with SPD do not have close personal relationships with those other than 1st level family. Would that then mean that you would then have what could be considered a "normal" relationship with your family?
"Normal" for me, yes. To my parents I am cold, unfeeling, uncaring, and distant. They are used to it now so it's (probably) not so bad. To my wife and especially my kids I am a good deal "warmer", but still fairly distant, no doubt.
I have noticed an noteworthy pattern over time. When it was just me alone I was reasonably close to my parents...once I got married I was reasonably close to my wife and less so to my parents...since I've had kids I am reasonably close to them but much less so to everyone else - especially my parents- and those other relationships have suffered quite a bit. I used to have a relationship with my kids that went through my wife, but that has changed, and she is more on the periphery now. I'm a very 'one-at-a-time' and parsimonious sort of person with my emotional energy.