Nandalot (What an amazing name!) I think your DGS deserves some psychological help. It seems so sad to think he has his life ahead with this incapacitating fear. I would encourage his parents to ask for help. I would think very gentle and understanding systematic desensitisation would work for him and probably be better earlier while he is young. Poor little chap.
Are books a thing of the past ?
Change the name in a tv show /movie title to the above user username
