Everyone responds to depression and anxiety differently. You can't necessarily tell from just looking at a person that this is what they're feeling. If you suspect it, try asking them and if they want to respond, they will.

In my experience if people want me to know theyre depressed they tell me. I dont feel any need to share how I feel with anyone around me unless I choose to talk with a dr or therapist. If I had a signifigant other i feel its important they tell me and/or I tell them where Im at. I dont expect anyone to just know. I dont think i want people to know unless theyre a dr or therapist that can help. I feel like it is something family n friends might need to know but otherwise its like an explanation. I have few friends n am not close with my extended family so i dont tell anyone how I feel cept this forum now. Eventually i may see a dr for treatment but right now this outlet is enough for me.

It helps me, knowing I'm NOT ALONE, in going through it.

I think people can tell by my eyes

I mask my anxiety and depression. Also the physical chronic pain from arthritis damage and working hard labor jobs up to my thirties. People always comment about me looking happy, and looking pretty good physically. The only reply I have for them is.. I work very hard to make myself look happy and healthy. It's not easy. It's like people think that if your not sad and crying all the time your okay. If you arnt hunched over and walking with a cane or Walker or wheelchair that your okay and should help them build the new rock retaining wall. And the people that think your just lazy, and ya dont want to work. So frustrating and annoying. Its just one more thing we all have deal with. As if we dont have enough already.
Best wishes