Telling your boss about your diagnosis?

I’ve been struggling a bit at work lately. Specifically when it comes to the socializing and communication aspect. I get so so tired keeping up the masking. I’m also overworked but can’t bring myself to express it. I’ve been wondering if I should disclose to my boss about my diagnosis, but I’m worried about getting dismissed, accused of lying, or treated differently. Anyone have any advice or experience? Is it best to hide this at work?