This turned out to be a rather huge, complex site!
Multiple, related custom post types were required, to link symptoms with solutions, products and blog posts. The products were then either available to purchase direct, via dropship or as Amazon affiliate links.
However, to the visitor this was a seamless experience, making finding and buying solutions an easy and relaxed purpose. All the time without feeling clinical or impersonal.
A definite teeth-sinking-challenge.
To say I could not be happier is the understatement of the year! And you can quote me on that!