What is that sad feeling?

[AnonyMouseToday]

You know, a kind of weird empty feeling when you just feel sad for no reason? I have it now. My son gets it sometimes. There doesn't seem to be a reason. I'm not actually feeling sad about anything. It's more a physical sadness.

Do u ever experience this and know what I'm talking about? Could there b a physical reason? Like low iron or blood sugar or something?

I hate it!!

For me it's a wave of intense 'otherness' and dissociation, of not feeling connected to any place, time or people, of feeling essentially alone in the world and that life as we live it has no real meaning, value or purpose.

Beautifully put @Gerwurtztraminer .I'm now feeling a bit of a wave of sadness ,and a "what's the point of anything if I can't even articulate how I'm feeling "
Only half joking!