My counsellor tells me that anxiety is usually a case of overestimating risks and underestimating one's ability to cope. It's overwhelm, perceived helplessness, lack of control, lack of learned resilience, lack of trust and hope, learned behaviours from childhood, learned responses to crises, problems and people. We're told life should be perfect but it isn't and we haven't always learned how to deal with that and/or our own emotions in a healthy way.
I've been formally diagnosed, I'm not on medication and I don't claim benefits, for certain posters above.
Anxiety is real, it's a vicious cycle and, while there are certainly differences in how it affects people and to what extremes, it can definitely be debilitating and life-sucking. Yes, online forums everywhere are places where the introverted and less people-oriented converge, so MN is a bit self-selecting in that respect. Yes, people can over/misdiagnose themselves, like the OCD example above. Anxiety as a medical condition is not the same as feeling worried about a specific thing or event.
Anxiety will creep into every corner of your life and take over, possibly without you noticing. It just becomes your normal, especially when you have little to no frame of reference because you've withdrawn from wider life. It's a long, hard fight to recognise it in the first place and then go about trying to heal from it. There are few resources available and I've been incredibly lucky to find an amazing counsellor to help me through it.
So when someone says 'it's making my anxiety worse' or whatever, it's easy to think they're making excuses. Of course it is. But why wouldn't they be telling the truth? Admitting the problem is half the battle, after all. And you're seeing less than half the picture on an online forum where you're making snap judgements about people's lives from a snapshot of their issues.
What's the worst that can happen by believing someone?