I've also had people obsessions throughout the years, starting when I was around six years old. I wouldn't do any obvious "stalking" type behavior, but I'd do things like write stories and poems about the person I liked and compile information about them like their addresses, phone numbers and family member's names.
I'm glad that yours have now toned down. Have you been using any strategies to limit and/or control them?
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Given a “tentative” diagnosis as a child as I needed services at school for what was later correctly discovered to be a major anxiety disorder.
This misdiagnosis caused me significant stress, which lessened upon finding out the truth about myself from my current and past long-term therapists - that I am an anxious and highly sensitive person but do not have an autism spectrum disorder.
My diagnoses - social anxiety disorder and obsessive-compulsive disorder.
I’m no longer involved with the ASD world.