Diseases
Looking through the gamedata files, I found something interesting... unused disease-related Affliction Types:
Bedfellow Mites
(AFT_Bedfellow_Mites)
Chest Worms
(AFT_Chest_Worms)
Red Lung
(AFT_Red_Lung)
Scurvy
(AFT_Scurvy)
Stone Creep
(AFT_Stone_Creep)
The Hack
(AFT_the_Hack)
The Pox
(AFT_the_Pox)
The Rot
(AFT_the_Rot)
Weeping Fever
(AFT_Weeping_Fever)
(To clarify, AfflictionTypes are gamedata objects that define affliction "categories" and includes ID references to the afflictions that they govern. The primary ones being the Attribute Afflictions, e.g. AFT_Might which contains references to Staggered, Dazed and Stunned.)
While our "disease" Affliction Types each contain several references, almost all of the afflictions that would correspond to those IDs are missing from the gamedata files. Luckily, one of these afflictions remain... Red_Lung_Stage4_Death 💀
We can from the name alone tell that Red Lung (and likely more of the diseases) would have ended in the death of the afflicted party member.
Looking closer at the Red_Lung_Stage4_Death affliction, it seems to cause a "blood splurt" visual effect, then outright kill the afflicted character.
Here is the effect in action:
It's a shame that there are no traces left of what the previous, non-fatal stages had for symptoms, though I could however find their names in the string table!
Stone Creep, Early Stage
Stone Creep, Middle Stage
Terminal Stone Creep
The Pox, Early Stage
The Pox, Middle Stage
Terminal Pox
The Rot, Early Stage
The Rot, Middle Stage
Chronic Rot
Weeping Fever, Early Stage
Weeping Fever, Middle Stage
Terminal Weeping Fever
Red Lung, Early Stage
Red Lung, Middle Stage
Terminal Red Lung
Bedfellow Mites, Early Stage
Bedfellow Mites, Middle Stage
Chronic Bedfellow Mites
Remedies
Looking further, I found seven unused item names, descriptions and icons for "remedies" related to our diseases!
Six of which corresponds to a specific disease, and one (Lichen Tablet) which seems to be a general cure to any stage 1 disease.
Lichen Tablet
"A medicine made from special fungi, moss, and algae native to the Deadfire. This unassuming capsule remedies most all sickness, so long as said disease is in its early stages."
Rymrgand's Bane
"When burned, Rymrgand's bane releases a therapeutic smoke. Cures Red Lung."
Potent Incense
"An pleasant aroma emanates from the smoldering sticks. While not strictly medicinal, the smoke repels bothersome insects. Treats Bedfellow Mites."
Rose Draught
"Pungent, sour, and bitter all at once. This brew is difficult to keep down, but its healing properties cannot be denied. It is used to break fevers and settle nausea, allowing the patient to recover. Cures Weeping Fever."
(I don't have good enough english or reading comprehension to connect the remaining three items with their descriptions.)
Aromatic Rub
Astringent Salve
Thistle Tar
Remaining descriptions:
"A poultice made from medicinal plants. This stinging pulp soothes lesions and sores while safely dissolving necrotic flesh. Cures the Rot."
"This botanical ointment is spread about the chest and neck. Its fumes are technically toxic, but have the benefit of treating breathing ailments before any noticeable harm comes to the patient. Cures the Hack."
"The smell from this goop is harsh and greasy. It is used to clear parasitic infestations deep in the skin. Removes the Chest Worms affliction."
"Toxin" and "Fungus"
Not directly related to the abovementioned diseases, but while searching I also found two unused items grouped suspiciously close to Antidote's name and description in items.stringtable
Antitoxin
"A few drops from this vial introduce cleansing materials into the body. The process is painful, but useful for purging foreign elements from the skin and blood. Cures afflictions of the "Toxin" type and imparts immunity to toxins for the duration."
Fungicide
"A necessity for any healer in the stagnant wetlands of the Deadfire, where a single prick of the skin can cause blooming fungal infestations. Apothecaries produce a steady supply of this harsh, stinging liquid to supply travelers and adventurers. It rapidly destroys fungal spores and growths, both topically and internally. Cures afflictions of the "Fungus" type and imparts immunity to fungus for the duration."
(Note that this Fungicide uses a separate string table entry from the FS quest item Fungicide)
Looking at their descriptions and comparing to Antidote's, it seems that at one point "Toxin" and "Fungus" existed as keywords alongside Poison!