CB, I'm remembering something from all the research I did to try and help my mum. She had a very aggressive form of rheumatoid arthritis. As she died in 1999 there will be theories i read then which have been either proved of dismissed by now. So the solanum allergy was being investigated as there was a strong indication, at that time, that it exacerbated symptoms. It was also being suggested that solanums (nightshades) may trigger unpleasant IBS-type symptoms in many people. Having written, that I googled and found quite a lot on allergy to Solanum melangena aka eggplant aka aubergine.
Goldfish shoals nibbling at my toes. Fun, fun, fun, in the sun, sun, sun!