Suppose a girl has issues with her monthly cycle and she took some hormone treatment to fix it and she is satisfied with the treatment. However she walks into marriage without sharing this detail with her potential husband and his family because she didn't know it could be that much big of a deal. Her husband is a doctor, but is freaked out after finding out when she explains it casually. Now he's thinking of divorce just after 2 weeks saying it was deception, that nikkah is based upon a lie because it could cause a serious fertility issue. However, it was discussed by the girl with various doctors and people who have gone through it and they said it is not a big deal can still be treated normal life continues.
This motivates the question:
How much information should be shared between potential husband and wife before marriage?