I had never heard of Essure, a small coil that is inserted into the fallopian tubes creating scaring for permanent birth control. If you know of anyone considering this type of birth control, please have them research it first before going though the nightmare some woman have. I too have a nickle allergy/sensitivity- so would have had the same adverse reaction. There is evidence that maker of this coil, Bayer took short cuts and ignored the negative comments in study participants for FDA approval.
A couple of stories:
Essure patients report problem, Chicago Tribune
Erin Brockovich Leads Fight Against Birth control device- ABC news