Anima Astrologiae or A Guide for Astrologers by William Lilly 1676

The 68th is to Consider, In questions relating to sick people, or Decumbitures, Whether the Lord of the Seventh, and the Seventh House itself, be free from Impediments? For if they be, the sick may safely trust himself to the care of the Physicians, for medicines will do very well. But if the Seventh House and its Lord shall be Afflicted, Ptolemy saith “The Physician must be changed, for neither his physic nor care will do any good”; for the seventh signifies the medicine as ‘Zael’ saith; or at least the disease grows chronical and lasting. The like is to be expected if the same positions happen at the beginning of any cure.

69.In Journies whether the Significators be equal