In this moving letter, the Rebbe combines expert medical guidance with timeless spiritual counsel. While encouraging consultation with leading specialists, he reminds the family that true healing comes from Hashem, and urges strengthening mitzvos, Taharas Hamishpachah, tefillin, mezuzos, and tzedakah as channels for blessing and salvation.
https://www.torahrecordings.com/rebbe/igroskodesh/017/008/6210