What are the differences between these disorders? adhd asperger's obsessive/compulsive disorder how do you know you have one, some or each one?

Careful evaluation: There are overlaps - ocd and aspergers can have high anxiety features/fixations on specific interests, etc. The more severe of these are usually not present in adhd, all can impact social relationships but adhd individuals usually have more spontaneous interest in others, and the social communication difficultes more severe in aspergers. See a good psychiatrist or psychologist for diagnosis.

Neuropsychological &: Psychiatric evaluations are needed to determine if your symptoms fulfill criteria for these distinct but often co-morbid disorders. Difficulty understanding that others' opinions & desires can differ from your own underlies autistic behavior. Difficulty maintaining focus solely on salient information occurs in adhd. Repetitive, non-functional movements can be tics, compulsions, or stereotypies.

Very complicated: I agree with the previous answers. Let me say that the other doctors did a great job, 400 words is way to limited to give you a comprehensive answer. Just by way of clarification in the most recent update to the psychiatric diagnostic system Asperger's Disorder has been merged into the diagnosis Autism Spectrum Disorder. If you wonder about these serious issues about yourself please see a dr.

Why do you ask?: If a few decades in medicine, and even more as a human being, have taught me anything, it's that people vary, what we see as our weaknesses can be turned to strengths, and we can practice new skills and gain new attitudes. Find a guide who'll show you how to get better whatever's been wrong up to now; new thinking / behaviors and perhaps a Rx for a time. The diagnosis isn't the key.