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Generally an official diagnosis is only necessary if you need treatment for your condition and need to apply to the government or an insurance company for help in getting the treatment. If you are coping okay on your own, then it might be best not to make things official, as this can indeed affect how employers and co-workers behave towards you, or even whether or not you get hired. As things are now they will percieve you as eccentric or quirky. Unfortunately, too many people don't know just what the Autism spectrum entails, and often have very mistaken views on it, which affect how they relate to us, often negatively. You can still research the Autism/Asperger's Syndrome spectrum on your own, and take the online tests that are available, so you will have an informal self diagnosis, if you really want more info on your condition. No one has to know about your online test results unless you tell them.
I am self diagnosed myself, and have chosen the "need to know" rule on it. My sister knows though, as she came across Asperger's info on her own and immediately saw me in it. When she contacted me to tell me about it, I told her that I had already learned about Asperger's, did some research, and did the online testing. My research and test results are proof enough to me that I have Asperger's.
Still, it's up to the individual. Some people insist on getting an official diagnosis even when they don't need government or insurance help with treatment. You will have to decide what's best for you.
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau