In that case, the best option is your own well-being.
When we experience losses and defeats, we have a sinking feeling at the bottom of our stomachs.
It is estimated that one in seven people in the world suffers alexithymia to some extent.
You need to go see a counselling psychologist who is qualified to diagnose personality differences and gets to know your son and runs proper testing.
It is not a mental health disorder.
It is not something big enough to completely dictate your way of being in all areas of life or leave you incapable of managing your daily life mental health disorder.