Originally Posted by dandelionnn
What do I need to look at?
Interesting question - I don't see why a horary wouldn't help.
I'd suggest that 6th House and 6 ruler covered mental health issues - illness of the mind being something that can often be helped with drugs to balance the chemical imbalance of the brain as part of the body ...
I would say that a horary asking 'Does X have a mental illness of some kind?' would give an answer one way or the other.
Say if the quesited's 6 ruler were badly degraded and/or the South Node were in their 6th House (something I've often found when people were making 'sick' decisions or behaving in a crazy way) ...
You'd be asking the question - so it would be 6th from the 7th.
Of course, as Dr Farr suggests, the natal chart if you could get it would help - particularly the first House and any planets in it, seeing how debilitated (or not) they were. Plus Mercury and the Sun in both the natal and horary.
Lilly includes under his heading Diseases of the Planets, Jupiter rules "Diseases in the Head" and he notes the Sun rules "The Brain" as does Mercury (p246, CA).
Hope that's some help. _________