Can Tetrodotoxin Poison Cause Chronic Back Pain And Inflammed Testes?

Hello. My fiance is convinced he was poisoned with Tetrodotoxin via injection. A non-lethal dose. He has been sufferring from chronic back pain and inflamation in the testes. He seems to think this is the long term effects of the poisoning. Can this be? Does the toxin leave long term effects? I have researched and cannot find anything. The symptoms he displays are also not aligned to this toxin.Please help.