Been diagnosed with moderate anxiety and depression 3 years now and I still cant face talking about it to my parents, just one of those hangups I have though fortunately my wife and key friends know and try to be supportive about it.
Logically there is no repercussions from diagnosis and treatment, indeed because of that many if not most can can function in work with no appreciable impact on their work.
Your enemy when suffering is your own imagination creating things to fear, those fears are as numerous as there are sufferers. Personally I am one who has prided myself on self reliance, being the guy that helps others, Normally I put myself last, so my anxiety and depression hits me with that when I reach out. But reaching out to the docs has been the best thing I have done, sure I still have crap periods but they are not as long or as deep, my triggers are still there but most of the time I can recognize them and try to brace myself for them.