hey I'm going through the ringer with symptoms myself, possibly being reactive arthritis, so I've researched it for a while. In order for your wife to have that disease she'd have to have had either a urinary or digestive tract infection leading up to the symptoms...could have a delay in between by a few weeks...has she? If yes, then that's probably what she has and the symptoms can last for 3 months up to a year...and you should be very happy that it's a temporary thing. The fact that she doesn't have lower spine pain definitely rules her out for spondylitis which is a very good thing too...that's what I'm struggling with now. Good luck to you.