I’ve touched on this before, but just came across Jamgon Kongtrul’s list of four main types of disease:
- Imaginary, like demonic posession
- Suddenly occurring diseases (no long run-up)
- Serious diseases that shorten life
- Diseases dependent on past actions
Once again, karma is seen as one possible cause of disease, but there are plenty of other reasons for getting sick.
(See Jamgon Kongtrul’s “Treasury of Knowledge”, Book 6 Parts 1 & 2, p. 328