I think defining things to a mental health professional can cause problems when it comes to self distinguishing between (social) anxiety and paranoia.
I think this is especially true if you are seen as having insight and what you say is taken at face value.
Mistakenly say you are paranoid enough times even though severe social anxiety might be a better descriptor, and it may be assumed that you are,indeed, prone to paranoia.
That then feeds into how you are dxed.
If you say you are paranoid often such a statement is taken at face value without an attempt to tease out why the person is saying they are paranoid, and to ascertain whether the self description is indeed accurate.
I do wonder about the difficulty of teasing out severe social anxiety from milder forms of paranoia. At what point does a fear of being bullied,embarrassed or ridiculed if engaging with others become something paranoid in nature?
Obviously we are not talking about CIA/MI5 bugging my home level of paranoia but what may be much milder/subtler presentations of paranoia.
Is a difficulty trusting because of negative experiences like bullying an understandable but socially limiting protective mechanism or an indicator of pathological paranoia ?