[No immersion therapy, thanks. He got quite enough of that back home. And you know what? It didn't help. Entomophobia? Bugs. Everywhere. Bugs in the caravans. Bugs in the tent. Giant bugs they had to fight. Claustrophobia? Caves. Sewers. Small, damp, dark passages that may or may not have an exit point. Acrophobia? How many narrow crumbling ledges has he breathlessly scooted across? Too many.]
You know, fear is supposed to be healthy. If you're afraid of the things that could actually kill you, you live longer. There's nothing irrational about that!