I'm posting mostly to correct the misinformation being spread here in case it helps anyone else rather than as a response to the OP who already seems to have decided she knows best (not sure why bother posting for advice)
Although I’m open to medication, I know that’s a purely selfish option because he wouldn’t be given the chance of this in the wild, he’d have to adjust and unfortunately he couldn’t care less
Firstly domestic dogs are not wild and nothing we do to/for them is wild. No veterinary care is natural. So using the wild or natural as a reason for not providing medical care to a domestic dog is faulty logic. Would you use the same faulty logic if he was painful?
But I still won’t dress it up as “behaviour modification or dealing with the root cause” because fact is, they are canines, they don’t have the same emotional lability or processing that humans do, as much as we don’t like to admit that, it’s true.
Which emotions are you referring to? Dogs certainly experience prime emotions - fear, anxiety, pleasure etc. There's no evidence they experience more complex emotions such as guilt as that requires an understanding of social norms, and there's mixed evidence on grief. But as you're dealing with a fearful dog, the relevant emotion is fear and yes dogs and all other mammals certainly experience that - it is highly evolutionarily conserved. You're still fixated on retraining behaviours rather than understanding that you need to focus on changing your dog's emotional state: Two very different approaches. It's a shame considering the abject failure of your approach that you aren't willing to even consider an alternative that has years of scientific evidence supporting it.
I’m a human though. Not a canine. Dress it up as you wish but we don’t have the same processes as dogs do. You sound unhinged.
Which processes are you referring too? Fear processing in dogs and humans is almost identical - amyghdyla activation, HPA axis activation, sympathetic nervous system activation, behavioural and physical responses indicating fear including avoidance and aggression. so this statement is simply plain wrong, and you're now insulting other posters on the basis of your own misunderstandings.
Honestly @roo2018 I'm not really sure why you posted this thread. You seem determined to deliberately ignore any rational evidence-based advice and stick to your own misconceptions whilst throwing insults at others.