The Common Illnesses chapter starts out with an acknowledgment that of course if you can afford an expert lifecrafter to cure your humans' diseases that's your best option, but, if your budget for that sort of thing is limited, here is some advice on how serious an illness probably is given symptoms, and what to do about it if you're not paying someone to cure them for you.
- Diarrhea: Always a bad sign, but you only need to start worrying if it lasts more than a day or if it's going around the pens in large numbers. Feed the afflicted humans as much broth as they can stand, and make sure someone's cleaning up after them very thoroughly.
- Coughs and sneezes: Isolate the afflicted humans to the extent you can afford; if it's this or that season, wave this list of likely flowers in their face to see if what you have is a human with allergies. If the cough is lasting longer than a few days, or sounds, like, awful, probably best to call a lifecrafter if you want to save the human. Definitely call a lifecrafter if it's spreading like wildfire.
- Fever: Often a bad sign. Isolate in a reasonably cool area, give plenty of water, and call a lifecrafter if more than a few of your humans are affected.
- Gross-looking sores: Are you sure you're not just overworking your human? Fragile human skin gets into all sorts of nasty situations if the human is pushing their squishy body to its limits! If a bandage and a few days' rest doesn't help, it might be time to involve a lifecrafter.
- Skin falling off: Is it red and blistery? Is your human really pale? Do they get a lot of sun? Yeah they'll be fine, this just happens. Fragile human skin is like that. If they're not getting a lot of sun, or other forms of external skin damage like heat or cold or abrasion, then you can start worrying.
- Certain very specific lists of symptoms: Your problem is that your humans are having a lot of sex with each other. Call a lifecrafter and have them check your overseers too, just in case. Yes, even if they claim they haven't been indulging. Not every disease like this crosses the species barrier, but enough of them do that it's worth making sure. Shocking as this may sound, an elf with weak enough lifecrafting skill could potentially even die of an illness they caught from a human!
- Some illnesses present with primarily behavioural symptoms! Often these are not contagious; sometimes they're less an illness and more a matter of the human being sluggish because they haven't been fed, watered, or rested enough, or because they're too hot or too cold. (Humans are fragile!) However...
- ALWAYS call a lifecrafter if you see a human acting listless and twitchy and not responding to commands, no matter how likely you think it is that they're just being insubordinate, and after the lifecrafter has checked every human you own, please go spit on the grave of the idiot who decided to see what happens if you infect a human with unicorn brain fungus. Your human almost certainly does not have unicorn brain fungus but it's REALLY IMPORTANT TO CHECK. The author personally knows a guy whose entire plantation had to shut down because someone thought it couldn't possibly be brain fungus and boom, a year later the humans were keeling over left and right and he didn't have the budget to replace them all. Especially if you're a serious breeding operation that's going to be selling all over the continent, do NOT fuck around when it comes to a possible brain fungus outbreak.