Probably one of the most intricate and helpful sections of this book, this is a compilation of sickness, wounds, and other things you'll need a medicine cat for with their symptoms, treatment, and info on the herbs used to treat it. I know it has nothing to do with making characters, but I figured I should put it somewhere. Alphabetical order. Some herbs can help with other things than what they are being applied for, but I won't list it unless it's relevant to the problem listed.

Keep in mind there are many many herbs, some do the same thing. I might list a few that will do the same thing, but for instance in 'Cough' I only listed Tansy. There are a couple other herbs that also help with coughing, though.

Aches/Pain
Pretty common, happens when a cat pushes themself too hard in training, also happens to elders
Symptoms: stiff, sore, reluctant to move
Treatment: Poppy Seeds and a day of rest
Poppy Seeds: numb pain

Aching Joints
Very common in elders. Known to humans as arthritis. Caused by cold weather, damp nests, and just being old in general.
Symptoms: Joints become stiff or sore, swelling/inflammation
Treatment: daisy leaves, nettle leaves and golden rod. Ragwort leaves. Fennel.
Daisy: soothes aching joints
Nettle leaves: keeps down swelling
Golden Rod: treats aching joints & stiffness
Ragwort Leaves: treats aching joints
Fennel: helps with pain in the hips. Good for queens.

Asthma / Trouble Breathing
Can be life threatening. Breathing becomes rapid and unsteady. Can be effected by allergies and kitting.
Symptoms: trouble breathing, wheezing, rapid and unsteady breathes
Treatment: Coltsfoot and/or juniper berries.
Coltsfoot: Eases breathing
Juniper Berries: helps troubled breathing. Do not give to queens

Bee/Wasp Stings
Happens to cats who mess with bees or wasps.
Treatment: remove stinger if it is still there as gingerly as possible. Blackberry leaves, poppy seeds, dandelion stems
Blackberry leaves: Eases swelling of bee stings
Poppy Seeds: numb pain

Blackcough
Fatal. Slim to no chance of survival. The final stage of Greencough. You can attempt to treat it, but in the final stages nothing can really be done. Make them comfortable, and ease them into StarClan.
Symptoms: severe wheezing and coughing, phlegm from mouth and nose, possibly pus and blood, sweating, high fever, weakness
Treatments: catmint, feverfew, lavender, poppy seeds, water
Catmint: by this stage, none of its alternatives could help at all.
Lavender: line their nest with this, it's very relaxing and can also bring down fever
Feverfew: bring down fever
Poppy seeds: eases pain, help sleep

Bleeding
Very common, best to treat and apply something to prevent infection.
Treatment: marigold and cobwebs
Marigold: prevents infection
Cobwebs: soaks up blood

Broken Bones
Injury caused if hit by a monster, falling from extreme heights, a very severe beating
Symptoms: swelling in area, extreme pain in area, resistance to walk/run/move
Treatment: Put the bone back in place, then use poppy seeds, broom, and horsetail. Apply a splint (like a reed) afterwards. Comfrey mixed with stinging nettles has the same effect as broom, if you cannot find any broom in your territory.
Poppy Seeds: eases pain
Broom: helps mend broken bones
Horsetail: prevents infection and stops bleeding
Reed: a god, sturdy splint

Carrionplace Disease
Basically food poisoning, you get it when you eat an infected rat. It's also contagious, so keep away from infected cats! Illness is similar to green cough, but it's more dangerous.
Symptoms: troubled breathing, violent coughing fits, fever, loss of hunger, exhaustion
Treatment: borage, coltsfoot, yarrow, juniper berries, honey, feverfew
Borage: brings down fever
Coltsfoot: helps with the coughing. You can also use Tansy.
Yarrow: you can attempt to make them throw up the infected food, might not work.
Juniper berries: soothes bellyaches, gives strength, helps troubled breathing
Honey: soothes sore throats
Feverfew: helps bring down fever

Chill / Cold / Flu
Happens when cats fall in water or if it's too cold outside. Fairly minor, but can turn into Whitecough if left untreated
Symptoms: chills, mild fever, congested nose, aches, sneezing, fatigue, headaches
Treatment: honey if sore throat, poppy seeds, water, rest, feverfew, lavender.
Honey: helps if there's a sore throat
Poppy Seeds: soothes pain of headaches and helps sleep
Feverfew: helps with chills and fever
Lavender: cures fever and chills, also very very soothing

Cough
Caused by irritated throat, symptom of other illnesses. Typically contracted during leaf-bare.
Treatment: honey, drinking water, tansy
Honey: helps ease rough throats
Tansy: cures coughs, soothes throat, used in advance can help prevent green-cough

Cracked Paws
Cracked paw pads happens when the skin gets to hard or too tender, and it cracks and bleeds. Most common in elders and cats with albinism. They can get infected if not treated
Treatment: goldenrod juice, coltsfoot, wild garlic, cobwebs
Goldenrod: helps heal wounds
Coltsfoot: helps with cracked or sore pads
Wild garlic: helps prevent infection
Cobwebs: soaks up blood and covers wounds

Cuts
Very common. Can happen to kits who play to rough, apprentices/warriors who train too hard, and occur in battle
Symptoms: Little to no bleeding, see 'wound' for more major cuts.
Treatment: rub with dock leaf, then use marigold. Cover with cobwebs or catchweed
Dock Leaf: soothes scratches, if nest lined with sock it can soothe wounds
Marigold: prevents infection
Cobweb: soaks up blood, can help keep poultice on
Catchweed: much more effective at keeping poultices on without hurting the skin

Death Disease
Lime disease. It's contracted from infected ticks. It's very rare, and it will slowly kill the cat. There is no cure whatsoever. Worse than Blackcough, and there's no hope of saving them. Ease their way to StarClan with lavender in the nest, water, and kindness.

Eyes (Aching / Infected)
Always be very careful with around the eyes, as they're very, very sensitive and can get infected easily! Aching eyes can be caused by anything from infection to allergies or just just plain exhaustion.
Treatment: the only safe herb for around the eye is Celandine. Trickle juice into eye.
Chewing stinging nettle stems can help fight infection
Celandine: soothes damaged eyes
Stinging Nettle: chewing on stems can help fight infection

Fever
After falling ill, usually accompanies the sickness
Symptoms: sweating, hot, dizzy
Treatment: Drink plenty of water, borage leaves, feverfew
Borage Leaves: treats fevers
Feverfew: can help reduce body temperature

Head Aches
Can happen when ill or just for unknown reasons.
Symptoms: pain, can't stand sunlight or sound
Treatment: dink plenty of water, willow bark
Willow bark: eases pain

Greencough
When Whitecough isn't treated soon enough, the deadly Greencough sets in. The cat version of pneumonia. Very contagious, separate sick from healthy! Normally caught from cold. Can turn into certainly fatal Blackcough.
Symptoms: sluggishness, wheezing, phlegm streaming from nose and mouth
Treatment: feverfew/lavender, catmint and its alternatives, coltsfoot
Feverfew/Lavender: bring down fever, relax
Catmint: cures green cough. Less effective alternatives: hawkweed, chickweed
Coltsfoot: eases breathing

Infection
Occurs when a wound is left untreated. As soon as you see signs you get your tail down to getting it out ASAP. By the time it spreads, there's no hope of curing it. Your patient will die a painful death. If they request, and you know there's no chance of them surviving, you can give them death berries for a much less painful death.
Symptoms: bad stench, pus, pain, raw/ tender skin of area, and fever if it is advanced
Treatments: horsetail & chervil leaf juice or burdock root & marigold. Pray to StarClan
Horsetail: prevents infection
Chervil: for infected wounds
Burdock Root: lessens and heals rat bites, prevents infection from rat bites
Marigold: stops infection

Kittencough
An illness only infecting kits, it effects the respiratory system. Medicine cats should check for this when they do check ups on kits.
Symptoms: sneezing, coughing, runny nose, tired, slight fever
Treatment: coltsfoot, feverfew/lavender
Coltsfoot: helps with the cough
Feverfew: helps bring down fever
Lavender: cures fever

Low on Milk
Happens to queens near kitting or have kits
Treatment: borage leaves
Borage leaves: increase milk flow

Morning Sickness
Occurring only in expecting queens, it's easy to treat! Remember not to give expecting queens juniper berries!
Symptoms: slight flu/cold symptoms
Treatment: rest and water, give her poppy seeds. Use raspberry leaves
Poppy Seeds: eases pain, helps sleep, calms nerves
Raspberry Leaves: also eases pains

Poison:
There are A LOT of toxic plants, so this unfortunately happens quite a bit, especially to younger cats who don't know. Snake bites are also poisonous, but the chances of surviving are slim. Remember to act fast!
Symptoms: dizziness, aches, pains, sweating, loss of consciousness
Treatment: Snakeroot or yarrow or nettle or tormentil
Snakeroot: thought to heal poison, try it on snake bites
Yarrow: causes you to vomit, use if the poison was eaten
Nettle: causes you to vomit, use if the poison was eaten
Tormentil: extracting poison. Try on snake bites.

Torn Claw
Often happens in battle or just by chance, it heals in a few days. Pretty common.
Symptoms: a layer of the claw may be broken, limping, pain, some bleeding
Treatment: Marigold, Poppy Seeds, cobwebs. Comfrey can help as well.
Marigold: keeps wounds from getting infected, heals sores
Poppy Seeds: Numb pain. Don't overdose: two seeds for av. size cat
cobwebs: soak up blood & slow bleeding.
Comfrey: can help with wrenched claws

Sores
Similar to a bruise, the skin becomes red and sore from rough activity. Not very serious, but best to be treated
Symptoms: red/raw skin, pain
Treatment: Poppy seeds & rub area w/ chewed up comfrey
Poppy seeds: numb pain. Don't overdose: two seeds for av. size cat
Comfrey: soothes wounds

Shock / Anxiety
When a cat has a phobia, witnesses something stressful/frightening, or has been badly injured.
Symptoms: jumpy/timid and unresponsive
Treatment: lavender, thyme, goatweed, poppy seeds
Lavender: very soothing
Thyme: calms nervousness, anxiety, and cats in shock
Poppy Seeds: can help ease shock
Goatweed: eases anxiety and grief (if you can find on your territory)

Sprains / twisted paws / ankles
Like a sprained ankle or wrist on a human. Injury is pretty minor.
Symptoms: swelling, painful to put pressure on or to move
Treatment: stay off injury, poppy seeds. A splint might be a good idea.
Poppy seeds: eases pain
Splint: a reed would do, it'll keep the sprained limb from bending.

Stomach Ache
Very common, mostly in kittens. Happens when a cat eats too much, eats something bad, or is also a symptom of serious illnesses.
Symptoms: pain in stomach
Treatment: water mint, chervil, mallow leaves, poppy seeds & Juniper berries. Use whichever is     
      common in your territory
Water mint: treats belly ache
Chervil: treats belly ache
Poppy Seeds: numb pain. For kits, only use one seed or a smaller seed.
Juniper Berries: treats belly ache
Mallow Leaves: soothes belly ache

Swelling
Often often appears with wounds, infections, and bruises
Symptoms: inflammation, pain
Treatment: Nettle Leaves, poppy seeds, possibly trickle some golden rod juice.
Nettle Leaves: reduce swelling
Poppy seeds: numb pain. Don't overdose: two for an average size cat
Golden Rod: heals wounds

Thorn(s)
Really common, especially in undergrowth territories.
Symptoms: pain, thorn can be stuck anywhere but common on paws
Treatment: lick the surrounding skin to soften the area, then pull the thorn out immediately! Treat wound like any other.

Throat Problems (Irritated/Smoke Inhalation)
Sore throat can be caused by a number of things, including smoke inhalation, sickness, and allergies.
Symptoms: raw throat, tender/swollen throat, throat can be dry, itchy, sore, or painful,
coughing might also occur
Treatment: Honey, Coltsfoot or Juniper Berries
Honey: soothes sore throats
Coltsfoot: eases breathing
Juniper Berries: helps troubled breathing

Ticks / Fleas
Common pests that can potentially make cats sick, but are mostly just really itchy!
Treatment: Put an apprentice to work with mouse bile! Ticks fall right off, and fleas must be crushed with teeth. Gross.

Toothache
Occur when there are loose teeth, cavity, or gum disease. Treat immediately.
Symptoms: loose tooth, inflammation of gums, or hole in tooth. Pain.
Treatment: alder bark/tansy
Alder bark: heals tooth ache
Tansy: heals wounds

Traveling Herbs
Taking a long trek somewhere? Often used for the journey to the moonpool, so if you're taking a day journey, take Daisy, burnet, sorrel, chamomile.
Daisy: no aches and pains!
Burnet: keeps strength up
Sorrel: helps keep you from being really hungry on the journey
Chamomile: strengthens the heart and soothes the mind. Gives extra strength.

Trouble Sleeping
Stressed, over worked, nightmares, depression, or illness can all cause trouble sleeping.
Treatment: poppy seeds, possibly juniper berries
Poppy Seeds: Can help a cat sleep. Don't overdose: two for average size cat
Juniper Berries: can help calm cats. Do not give to queens

Rash
Can happen when a cat has scratched to much, allergies, or too hot
Symptoms: red, tender area
Treatments: Comfrey Root, poppy seed
Comfrey Root: Can be used for itching
Poppy Seeds: eases pain

Whitecough
Similar to the flu and Kittencough, it's actually kinda common. Not too deadly if it doesn't get treated or if treatment isn't working. It will progress into deadly Greencough.
Symptoms: sneezing, coughing, running nose, fatigue, slight fever
Treatment: catmint, feverfew/lavender, honey, poppy seeds, water, bedrest
Catmint: very effective at curing Whitecough. Only found in two leg place though. Hawkweed and chickweed are alternatives.
Feverfew: bring down fever
Lavender: cures fever, relaxes
Honey: soothes throat
Poppy seeds: helps sleep

Wound
Anywhere from minor to critical. Treat immediately no matter the severity, as infection can occur, which is deadly.
Treatment: Comfrey Root, Marigold, horsetail, cobwebs
Comfrey Root: soothes wounds
Marigold: prevents infection
Horsetail: prevents infect and stops bleeding
Cobwebs: soaks up blood, slows bleeding, acts as a bandage

Packs:
Medical information on set topics that might interest you. Includes the proper title used so that you can find it with ease as well as herbs that are important in that category.

Kits and Queens pack:
"Kitten Cough" "Low on Milk" "Asthma / Trouble Breathing" "Stomach Ache" "Morning Sickness"
Juniper Berries should not be used for expecting queens and kitting queens.
Poppy Seeds not recommended for nursing queens
Borage Leaves can help with milk
Parsley can help slow or stop milk
Fennel can help with pain in the hips, which queens might get
Chervil is often used in kitting
Raspberry leaves stop bleeding during kitting
Lavender has a very soothing scent, perfect for a nursery

Elders pack:
"Aching Joints" "Ticks / Fleas" "Asthma/Trouble Breathing" "Cracked Paws" "Rash" "Coughing"
Itchy? Use Comfrey Root!
Make sure to keep your nest clean and dry, or else you might get some aches!
Get an apprentice to do your work for you; don't stress your old poor body.

Battle Pack:
"Wound" "Bleeding" "Infection" "Torn Claw" "Shock / Anxiety"
Horsetail helps to stop bleeding as well as treat infection
Always put an herb on that cures infection, because once it sets in their chance of
survival drops dramatically.
Chamomile can help give energy, along with burnet and honey! If you know you're
      going to battle, take some chamomile before you leave.

Deadly Sickness Pack:
"Whitecough" "Greencough "Blackcough" "Carrionplace Disease" "Kittencough" "Death Disease"
The stages of progression goes as follows: cold - flu - Whitecough - Greencough - (if not dead yet) Blackcough
Kittencough is the basically Whitecough but only for kits. It isn't really too deadly, but it can be if not treated.
Carrionplace Disease tends to occur in ShadowClan.
Death Disease is the cat's name for lime disease

Okay. I'm just going to say: this chapter was the worst to type, in my humble opinion. 2,500 words, just for the record, as well as about 3.5 hours of work put into it. I'm probably going to get arthritis or something crazy like that. Thankfully though, I know that in the warriors world, I'd treat it with daisy leaves. Wow. It's been a long day. I hope this is a GREAT reference, and if you know of any other ailments I might be able to figure out a cure if you tell me the description of it. If you have any added facts or ailments that should be added to the "Packs" then comment and I'll add it right away! Also if you steal this I will beat you with a termite infested stick.

Credit Stuff:
Medicine Cats art by nifty-senpai on DeviantArt
Sources
http://www.goodreads.com/topic/show/633265-complete-list-of-medicene-cat-herbs-and-treatments
http://warriorcats12.weebly.com/symptomsdiseases-sickness-for-the-warriors-1.html
http://warriors.wikia.com/wiki/Medicine