Thank you so much for your post and the links to articles on copper allergy. Here is my story with a paragard copper IUD (warning, not positive): -Paragard Copper IUD placed in uterus in 2007 at 30 years old. Slight cramping at time of insertion. No big deal, though. Periods sort of heavy for first month or two and then light and easy. -From 2007-2010, steadily develop neuropathy, chronic major (untreatable) depression, migraines, circulatory issues, tremors, urinary hesitancy and urinary urgency. -2010: Diagnosed with Primary Progressive Multiple Sclerosis. -2010: Undergo cutting-edge medical procedure (no MS drugs) and 90% of MS symptoms go away (and stay away) EXCEPT urinary issues. *--->I figure that these issues are from the MS. (So does my doctor and everybody that I see for it.) -2011-2012: Urinary issues get WAY worse and eventually render me completely incontinent. I go through 8-10 maximum absorption Poise pads a day, wet myself regularly while driving, have absolutely NO control over my bladder. Practically housebound. Medication for urgency does NOT work at all. It is as though the urine just falls out whenever I sit, stand, carry groceries, talk with someone, exercise, or get the sensation to urinate. I cannot make it to the toilet in time about 95% of the time**. ---->** Totally disheartened. Is this the MS? If so, is it now getting worse? Will I soon need a catheter and bag all of the time? -Late February 2012: Start to wonder if it could be the IUD. Find this forum, read the testimonials, decide to get the IUD removed, set up appt with doctor. -Mid March 2012: Have IUD removed by doctor. (Very easy. No obvious issues whatsoever.) Only 1 urinary urgency issue within 24 hours of IUD removal, following exercise. Already a MAJOR improvement, considering that I would normally have between 5-8 incontinence incidents in that time period. April 2012: 2 weeks since IUD removal and COMPLETE RESOLUTION of urinary issues!!! Ability to hold urine and get to the bathroom in time to urinate on the toilet 100% of the time. No problems at all. NONE!!! Summary: Over time, the Paragard IUD eventually made me completely incontinent. Removal of the copper IUD eliminated these issues. This is a direct correlation. Moral to the story: If you have bladder issues along with having the copper IUD, you may have something similar going on. It certainly is worth investigating. Don't let your doctor tell you that is impossible. It is possible. I'm living proof! For me, I think that it was constantly causing irritation and inflammation that impacted my bladder and ability to hold my urine. Now that it is gone, I am like a new woman! Best of luck to all!