Hello Caelan: I see this is your first post here on PC. Welcome to Psych Central. Here are links to the Depression & the Social Anxiety forums, here on PC, just in case you haven't already found them:

https://psychcentralforums.com/depression/

https://psychcentralforums.com/socia...ective-mutism/

We here on PC cannot offer mental health diagnoses. (For that you will need to see a mental health professional where you live or , perhaps, do some on-line therapy.) Plus I'm not a mental health professional. So I can't suggest what may be causing your "apparitions".

I have some similar experiences myself although they're not as intense as yours seem to be. Mine occur primarily at night when the house is dark & quiet. I presume mine are the result of a longstanding anxiety disorder plus I'm an older person so I presume age has something to do with it as well.

Here are links to 7 articles, from Psych Central's archives, that (hopefully) may be of some help:

Social Anxiety Overview | Psych Central

6 Ways to Overcome Social Anxiety

Treating Social Anxiety Disorder with Mindfulness

https://psychcentral.com/blog/podcas...-controls-you/

https://psychcentral.com/blog/five-f...-need-to-know/

https://psychcentral.com/lib/what-ps...and-feel-like/

https://psychcentral.com/lib/psychotic-depression/

I hope you find PC to be of benefit.