When Two Minuses Do Not Make a Plus: A Medical Shidduch FAQ

In medical matters, shidduchim can easily trigger either panic or dangerous concealment. This FAQ gathers practical guidance for the places where people most often confuse real responsibility, family anxiety, and the boundaries of halacha.

1. Genetics and the “rule of three.” One illness in one relative does not by itself create an established presumption. In guidance associated with the Chazon Ish and Rav Chaim Kanievsky, serious hereditary concern usually requires a stable repeated pattern.

2. When two minuses do not make a plus. If two people struggle with the same weakness, such as depression, the match is not automatically safer. Sometimes both partners may lack the strength to support each other.

3. Must concentration medication be disclosed? If a medication is used as learning support rather than treatment of a serious illness, it is not always treated as a disclosable “disease.” But if it reflects a deeper condition, the underlying issue cannot be hidden.

4. Infertility among relatives. The absence of children in relatives is not by itself proof of a problem in the candidate.

5. Plastic surgery. Correcting a visible defect is not automatically deception, though it should not become part of building a false identity.

6. Doctors and confidentiality. Medical professionals do not automatically gain permission to reveal confidential information for shidduch inquiries. A halachically cleaner path is usually needed.

7. When must a controlled illness be disclosed? Not every issue must be disclosed before the first date, but once the shidduch is clearly moving toward commitment, chronic or psychiatric conditions that affect family life should not remain hidden.

8. CMV and similar tests. Such results are part of medical management, not a reason to cancel a shidduch.

9. Ongoing psychiatric medication. Constant psychiatric medication is not a trivial detail and should not be hidden until the end.

Practical takeaway. In medical shidduch questions, one must neither know nothing nor panic about everything. Serious matters must be disclosed, minor matters should not be dramatized, and difficult cases should be guided by both physician and rav.