I realized that in a campaign world where disease matters, where it can spread and kill people, visible symptoms will have serious in-game effects. Rashes, pustules, or skin coloration might prevent you from shopping, or even entering town depending on the context. I suppose that means that neither this nor the disease chart I've been working on are truly "one-pagers" because they are dependent on each other. The more deadly the pox causing disease is in your campaign the more npcs will freak out when they see Joe fighter has them.
I think another big effect is interfering with spell casting. I put "miscast" in the chart to make things more interesting I might interpret that as:
- Wrong memorized spell cast
- Wrong target
- Too weak, half power
- Too strong double effects
The specific number mentioned for seizures is taken from Zak's lucky numbers-- player chooses a number, say 9, any time they roll it they have a seizure, whether its from trying to hit in combat or trying to save from something else. Though, maybe it should be a number from 1-6 to include more possible rolls, like listening at doors etc.