Illness in the Pokémon world

In the Pokémon world, several have been shown to develop illnesses, similar to what happens with status conditions. Pokérus is an unusual example of a disease with effects that are beneficial. Some people have also been known to get sick or suffer from illness. The deaths of some people and Pokémon have been due to illness.
Pokémon illnesses are sometimes treated by administering Potions and herbal medicine. Certain Pokémon byproducts are also believed to have medicinal properties.
==Pokérus==
Pokérus is a rare viral infection that causes Pokémon to grow exceptionally well. Specifically, it doubles the effort values a Pokémon gains from . The infected Pokémon can infect other Pokémon with the virus for a period of one to four days before becoming cured. While similar in many ways, the Pokérus is not a status condition and cannot be healed at a Pokémon Center or with any status condition healing item. s may also catch the Pokérus like any other Pokémon. Once a Pokémon's immune system has fought off the virus, they cannot spread it further, nor can it be spread to them by other Pokémon. However, the Pokémon still gains double effort values when cured.
In the Pokémon the Series episode Oaknapped!, Dr. Namba explained to that the mysterious viral lifeform Pokérus is an important component of his Pokémon Power Acceleration Project (PPAP), a secret project that aims to infect Pokémon with the Pokérus to evolve them at a faster rate. However, all of his specimens had died out. Professor Oak also explains that the term "Pokérus" was coined by combining the words "Pokémon" and "virus" together. Later, Professor Oak began researching about the Pokérus and Team Rocket's true intentions of using it.
In the of the Pokémon Adventures manga, the Pokérus was discussed in The Final Dimensional Duel IX, when 's team was discovered to have this virus and, as a result, became stronger. Her , , and had it prior to being taken from the hospital, and then it spread to the rest of her party.
==In the games==
In the Generation II games and , Jasmine's , Amphy, is found ill in the Olivine Lighthouse in Olivine City when the player first arrives. At the top of the lighthouse, Jasmine asks the player to retrieve the SecretPotion from Cianwood City to cure Amphy.
In the Generation III games and , Wally is a sickly young boy who lives in Petalburg City. Despite his illness, his dream is to Pokémon. His illness is never explained, but his symptoms appear to clear up in clean air, suggesting that it is either or . He first appears in Petalburg City, asking Norman, the Petalburg Gym Leader, to help him catch a Pokémon before he moves to Verdanturf Town to live with his aunt and uncle. This is because Verdanturf is in a remarkably clean area and might improve Wally's sickness. Wally eventually runs away from home and challenges the player at , seemingly recovered from his illness.
Prior to the events of , Alder's first partner Pokémon died of an illness, and in despair over not being able to save it, he began traveling around aimlessly. Before his partner's death, the two of them madly pursued strength. The Pokémon's death changed Alder's outlook on life. The identity of this Pokémon is never mentioned in Black and White, but dialogue in reveals that Alder's late partner was a , which evolved from a .
In , a girl named Paula in Hammerlocke asks the player to deliver a letter to a boy named Frank in Ballonlea. The boy turns out to be an old man who was friends with a girl named Paula when he was younger, but she fell ill and hid from him how sick she was. This caused an argument and the boy ended up moving away shortly after. If the player returns to where Paula was, they'll find a Reaper Cloth.
Prior to the events of , Brassius became deathly ill and depressed during his desperate attempts to sell his art and become famous. Hassel helped him learn to let go of his obsessions with fame and fortune, resulting in his creation of the "Surrendering Sunflora" statue installation in Artazon, his last attempt to be recognized for his art, else he quit life as an artist altogether.
===Pokédex entries===
====Pokémon that suffer from illnesses====
Pokémon	Pokémon	First time mentioned
 	 	: The flame on its tail shows the strength of its life force. If it is weak, the flame also burns weakly.
 	 	: It's in its nature to store electricity. It feels stressed now and then if it's unable to fully discharge the electricity.
: While sleeping, it generates electricity in the sacs in its cheeks. If it's not getting enough sleep, it will be able to use only weak electricity.
 	 	: As electricity builds up inside its body, it becomes more aggressive. One theory is that the electricity buildup is actually causing stress.
 	 	: Zubat remains quietly unmoving in a dark spot during the bright daylight hours. It does so because prolonged exposure to the sun causes its body to become slightly burned.
 	 	: The swirl on its belly is its internal organs showing through. If the swirl is tinged white, that means it's affected by some disease.
: Its health suffers when its skin dries out, so be sure to moisturize it diligently.
 	 	: Touching the back fin causes numbness. It hooks its tail to coral to stay in place while sleeping.
 	 	: It unleashes psychic power from the orb on its forehead. When its power is exhausted, the orb grows dull and dark.
 	 	: When it hears the crash of thunder, Elekid's mood improves. It can be useful to record that sound and play it when Elekid's feeling down.
 	 	: Magby's state of health is determined by observing the fire it breathes. If the Pokémon is spouting yellow flames from its mouth, it is in good health. When it is fatigued, black smoke will be mixed in with the flames.
 	 	: This Pokémon needs to be milked every day, or else it will fall ill. The flavor of Miltank milk changes with the seasons.
 	 	: Lotad live in ponds and lakes, where they float on the surface. It grows weak if its broad leaf dies. On rare occasions, this Pokémon travels on land in search of clean water.
 	 	: Its body is covered with a slimy film. The film acts as a barrier to prevent germs in muddy water from entering the Barboach's body.
 	 	: It blows fire through its nose. When it catches a cold, the fire becomes pitch-black smoke instead.
====Pokémon that induce illnesses====
Pokémon	Pokémon	First time mentioned
 	 	: Vileplume's toxic pollen triggers atrocious allergy attacks. That's why it is advisable never to approach any attractive flowers in a jungle, however pretty they may be.
 	 	: Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.
 	 	: Wherever Grimer has passed, so many germs are left behind that no plants will ever grow again.
 	 	: It strikes at humans from total darkness. Those licked by its cold tongue grow weaker with each passing day until they die.
 	 	: If this Pokémon's sticky saliva gets on you and you don't clean it off, an intense itch will set in. The itch won't go away, either.
 	 	: Its thin, flimsy body is filled with gases that cause constant sniffles, coughs and teary eyes.
 	 	: There was a scientist who peeked under Mimikyu's old rag in the name of research. The scientist died of a mysterious disease.
==In animation==
===Pokémon the Series===
====Electrical overcharging====
This condition is known to affect Pokémon, although and its evolved forms and appear to be immune to it. This illness is caused by exposure to high levels of electromagnetic energy. Symptoms appear to vary, as shown by different species stricken with it.
In Hoenn Alone!, came down with this illness after used an electromagnet in an attempt to drain Pikachu's electricity. It appeared quite lethargic when affected, whereas a from Reversing the Charges did not. He was fully healed in the following episode by a giant mecha that the trio used to try and drain Pikachu's electricity, but only drained the excess energy out of him rather than what they intended. This event shows that there are different levels of this illness, as the first time Pikachu got it, it only had flu-like symptoms; a different time, however, it got so severe there was a threat of Pikachu exploding from the overload. A Pikachu that has an electric overcharge usually becomes red-eyed, aggressive, and dangerous toward its , though this may only apply to severe cases. 
Dawn's Pachirisu got an electric overcharge in Doc Brock!, where it was able to get rid of it with an Oran Berry and attacking Team Rocket. A wild also got affected from overcharge after becoming lost and frustrated in the subways of Lumiose City in XYS06. It was calmed down by 's , which helped it discharge its electricity.
This condition is cured by discharging electricity, usually via moves, until the Pokémon's electricity level is normal.
====Fever====
Known to affect Pokémon of different types, fevers have appeared frequently in . 
 and delivered medicine to Nurse Joy for a sick in The Bridge Bike Gang. She poured the medicine into its tank, immediately improving its condition.
 developed a type of fever in The Problem with Paras. His was cured fairly quickly by a mixture of herbs, as well as pills taken with meals afterward. 
A more severe fever struck a in Do I Hear a Ralts?. It was treated by Ash and his friends giving it food and keeping it cool until they arrived at the local Pokémon Center for more intensive treatment. The nature of the treatment was unclear, but it appeared to include the use of an oxygen mask. The recovery was quick, and no follow-up treatment was necessary. Both Meowth and Ralts became listless when affected, although it was more variable in Ralts.
In Pinch Healing!, a developed a fever after being caught by . After being taken to the Pokémon Center, Bagon appeared to get better, but its fever suddenly escalated before being given medicine by Nurse Joy, which finally helped the Pokémon's fever to subside.
James's Chimecho also had a large fever in Sweet Baby James, in which he had to leave Chimecho at his summer cottage near Saffron City, though he planned to return some day to take Chimecho back.
In Stopping the Rage of Legends! Part 1, all the Grass-type Pokémon on Milos Island fell sick, including Lewis's , who suffered a fever.
 developed a fever in All for the Love of Meloetta! after being attacked by Team Rocket. It was given an ice pack made from frozen river water and an Oran Berry, which brought it back to health.
====Pokémon-itis====
Known to affect humans in the Pokémon world, this malady causes them to think and act like various Pokémon. The only known cause of Pokémon-itis is being exposed to a 's , and even then, only when the Hypno has been trained so that its Hypnosis attack specifically affects humans. It is curable by 's sleep waves, as seen in Hypno's Naptime. Adults appear to be immune to Pokémonitis, as the oldest person to be shown afflicted with it was , despite numerous adults being in extremely close proximity of said hypnotic waves. In Japanese, this condition was called "Pokémon Gaeri", a reference to .
====Other illnesses====
=====Chespie's coma=====
 
In Mega Evolution Special IV, Chespie entered into some form of coma after being exposed to the energy that a Core (Squishy) had been subjected to, devastating Mairin. Much later, in The Synchronicity Test!, Chespie had still not recovered, but Lysandre claimed that Alain could revive Chespie by collecting Mega Evolution energy. In truth, Lysandre had no intention of helping the ; the energy was actually to power a machine to influence the mind of Zygarde. After Lysandre's true colors were exposed, Mairin set out to rescue Chespie from Lysandre Labs, with the help of and . Chespie was eventually rescued in The Right Hero for the Right Job!. However, it ended up absorbed by Lysandre's fallback plan, a Giant Rock with the appearance of Zygarde 50% Forme, in Rocking Kalos Defenses!, although it was eventually rescued by and Alain in Forming a More Perfect Union!, temporarily halting the Giant Rock. The energy was absorbed by the Giant Rock, and as a result, Chespie finally recovered.
=====Meowth's cold=====
In Pikachu Translation Check..., , wearing a medical face mask, revealed to Jessie and James that he had a cold. Jessie and James suggested he get some rest, offering him warm blankets and a cool towel. Jessie asked Meowth if he wanted anything to eat, but Meowth suspected his teammates planned to slack off while he was sick as they listed a heap of treats for themselves. In his weary state, Meowth declared that there was one thing Team Rocket was missing, but he collapsed before he could reveal the answer. Later, Jessie tried to shake Meowth awake, hoping Meowth could review her latest scheme, but Meowth instead fainted from illness again. Meowth eventually recovered after a day of rest.
=====Pikachu's mold inhalation=====
In Crisis at Ferroseed Research!, inhaled moss spores created by that had been absorbing electricity from charged stones, and became sick. Later, it was shown that the illness only affected and types. A treatment made of Lum Berry, Mago Berry, and White Herb extract cured Pikachu and brought him out of his daze.
====Unspecified illnesses====
In Bulbasaur and the Hidden Village, Melanie was seen taking care of sick Pokémon in the Hidden Village.
In The Joy of Pokémon, a sick and multiple ill are treated by Nurse Joy.
An ill Mimey appeared in Shocks and Bonds, being tended to by as they watched 's battles in the Ever Grande Conference.
Jessie came down with a sickness in Dressed for Jess Success!, and James competed in a on her behalf in her usual Jessilina disguise.
In Sewaddle and Burgh in Pinwheel Forest!, a sick was cured by Burgh's medicine.
Before To Find a Fairy Flower!, Florence had one day suddenly fallen ill and collapsed while she was gardening. She was quickly taken to the Calanthe Town Central Hospital by ambulance. This saddened her husband 's , who had always enjoyed Florence's company, and she left to search for her. While Flabébé was looking through the window of the hospital Florence was staying in, a strong gust blew her away, and her flower was run over by a passing car and destroyed. Grey was unable to retrieve her, and as such, Florence went into a state of emotional despair despite her treatment being successful.
A sick in Beyond the Rainbow! was healed after Ash helped revitalize the wetlands so it could receive the water with special healing properties. 
In Lights! Camera! Pika!, Frank was mentioned to have had a chronic illness through his childhood that his Pikachu helped him through.
At some point prior to A Watershed Moment!, Henny's grandfather, Chapman, died of a certain illness.
Prior to the events of Pokémon the Series: Sun & Moon, Mallow's mother passed away due to an unspecified illness while was still little. 
Nurse Joy came down with an illness in Real Life...Inquire Within!
In The Power of Us, Kellie was a young girl who suffered from an unidentified illness that affected her energy levels and could be triggered by stress.
In Distant Blue Sky!, set in an alternate continuity from the rest of , met the ghost of a boy named who had died of an illness before getting to set off on his journey as a Pokémon Trainer.
===Pokémon Mystery Dungeon: Explorers of Time & Darkness===
In Pokémon Mystery Dungeon: Explorers of Time & Darkness, and 's first rescue mission as Team Poképals was to go into Labyrinth Cave and retrieve a Gabite Scale in order to cure a young 's sister of her sickness. After they succeeded and returned to Wigglytuff's Guild, Shinx was overwhelmed that his sister had gotten better.
===Pokémon: Twilight Wings===
 was a young boy who was being treated for an unknown illness in a hospital, where he met his good friend while they shared a wardroom. John hoped to become a great Pokémon Trainer just like his idol Leon once he recovered from his illness.
==In the manga==
===Pokémon Pocket Monsters===
In Pokémon Pocket Monsters, Jasmine's , Amphy, appeared in Light Up The Lighthouse!!, where it had fallen ill to the point where it was no longer able to light up the lighthouse in Olivine City. Jasmine had go to a pharmacy to fetch the SecretPotion needed to heal Amphy. After acquiring the SecretPotion, the medicine was lost at sea. Jasmine became even more worried when a ship arrived at the lighthouse, since Amphy still could not light it up. However, when Red's Clefairy ate some pills, Clefairy glowed enough to give the ships light and save them from crashing. This made Amphy feel better.
===Pokémon Adventures===
In Pokémon Adventures, had long suffered from an unspecified debilitating disease before being cured with medicine made from herbs gathered by the Team Rocket Elite Trio with the help of 's Pichu, the Spiky-eared Pichu, and .
========
In All About Arceus II, Lance told Bugsy the history of the Pokéathlon's creation. The tale consisted of an island plagued by illness and a Pokémon Trainer setting off to find a Mythical Pokémon that could give them the cure. Once the Trainer and their Pokémon became one, only then did , the Mythical Pokémon they had been searching for, give them the cure. The Pokéathlon was created to celebrate this Trainer's achievement; the sports are meant to represent the obstacles the Trainer had to go through in order to find the cure.
===Pokémon Gold & Silver: The Golden Boys===
In A Promise Given to Miltank, after Whitney's Miltank had been diagnosed with a deadly disease that has been spreading to various in the region, , Whitney, and Morty set out to find the required to cure her, only having time until sunset before the disease would claim Miltank's life. Their Berry-gathering was hampered by wild Pokémon appearing from the Berry trees, but ultimately, they managed to find a tree with lots of Berries on it. Gold used his to lure away the that were swarming around the tree, while Whitney had knock the Berries down with . The Berries were delivered to the Ecruteak City Pokémon Center just in time, saving Miltank's life. Out of gratefulness, Whitney gave Gold a and returned his Pikachu to him.
===Pokémon RéBURST===
In Pokémon RéBURST, Karuta's home village was plagued by a disease that had claimed several of his friends and family. Karuta entered the Burst Warrior tournament, Burst Heart Survival to win the prize money and help the sick people of his home village. The final match ultimately ended in a tie between Ryouga and the Boss of Great Gavel, Fraud. Great Gavel left the area and left the prize money there. After returning all of the stolen Burst Hearts, Ryouga, Miruto, and Yappy traveled with Karuta to buy the medicine he needed to heal his dying village. After buying the medicine, Karuta and the others were attacked by a Great Gavel member named Rūkamu.
After Rūkamu sent Miruto off of the bridge, Ryouga ran to go rescue her, leaving Karuta alone to face the Burst Warrior. Despite his best efforts, Karuta was unable to land any hits on Rūkamu and was angered when Rūkamu called him "Crybaby Karuta", a nickname that he was referred to in his village. Eventually, Ryouga returned with Miruto and defeated Rūkamu by sending him flying into the mountains. After defeating Rūkamu, the group proceeded to the village but, upon arrival, Karuta told them that he didn't want to go into the village.
After explaining to them how he got his nickname and who his father was, Ryouga tossed Karuta into the village and gave him words of encouragement. Moved by his words, Karuta gave the medicine to his dying village and healed the sick people. Unfortunately, when Karuta arrived at his house to see his mother, he found that she had died that morning.
===Pokémon Newspaper Strip===
In , guesses that the source of her Psyduck's headaches could be high blood pressure, or eye strain, or a brain tumor, or anxiety.
==In other media==
===POKÉMON Detective Pikachu===
In , Howard Clifford was diagnosed with a degenerative disease that would soon leave him wheelchair-bound. Upon receiving this diagnosis, he resigned his position within the company and passed it to his son Roger, then set out on a journey of the world in search of a cure for his condition. His research led him to the conclusion that if humans could evolve into the best versions of themselves the same way Pokémon could, it would solve such issues.
==Treatment and medicine==
===In the core series games===
Some naturally produce substances that can be used as medicine, as mentioned in several Pokédex entries.
Pokémon	Pokémon	Medication 	First time mentioned
 	 	medicine for extending life 	: Mushrooms called tochukaso sprout from its back. They can be dried and powdered to make a medicine used to extend life.
 	 	herbal medicine in China 	: It scatters toxic spores from its mushroom cap. Once harvested, these spores can be steeped and boiled down to prepare herbal medicines.
 	 	herbs with refreshing sensation 	: The vines of a Tangela have a distinct scent. In some parts of Galar, Tangela vines are used as herbs.
 	 	traditional herbal medicine 	: Its fin tips leak poison over its body are highly valued as ingredients for making traditional herbal medicine. It shows no mercy to anything approaching its nest.
 	 	medicine for insomnia 	: Its strangely shaped antlers have the power to bewitch those who see them. Medicine made by grinding up the black orbs from fallen antlers is an effective treatment for insomnia.
 	 	medicine for weary body or incurable illnesses	: There is a long-held belief that medicine made from its scales will heal even incurable illnesses.
 	 	remedies for lower-back pain 	: Fluid squeezed from its finger, albeit poisonous, is a significant ingredient in remedies for lower-back pain.
 	 	tonic 	: Its crimson claws contain a virulent toxin. This toxin can be made into a tonic by diluting it, mixing it with several types of wild grass, and boiling it down over two days.
 	 	medicine for weariness 	: This Pokémon dwells deep in the forest. Eating a leaf from its head whisks weariness away as if by magic.
 	 	essential oils 	: Essential oils made from Lilligant flowers have a sublime scent, but they're also staggeringly expensive.
 	 	oil for bad skin 	: The oil that seeps from its body is really smooth. For people troubled by bad skin, this oil is an effective treatment.
 	 	stomach medicine 	: The spores released from this Pokémon's hands are highly poisonous, but when thoroughly dried, the spores can be used as stomach medicine.
 	 	general treatement 	: Fishermen take them along on long voyages, because if you have an Alomomola with you, there'll be no need for a doctor or medicine.
 	 	medicine to cure any illness 	: According to legend, medicine to cure any illness can be made by plucking the green leaves on its head, brewing them, and boiling down the liquid.
 	 	aromatic flowers with relaxing effect 	: Baths prepared with the flowers from its vine have a relaxing effect, so this Pokémon is a hit with many people.
 	 	mucous for sunburned skin 	: These Pokémon line the beaches. The sticky mucous that covers their bodies can be used to soothe sunburned skin. How convenient!
 	 	anesthetic drool 	: A potent anesthetic can be made by diluting Komala's drool. This anesthetic was used for surgeries in the past.
 	 	health restoring scales 	: As it flutters about, it scatters its strangely glowing scales. Touching them is said to restore good health on the spot.
===In Pokémon the Series===
In Pokémon the Series, s are shown to have knowledge on how to treat Pokémon illnesses by administering Potions and other medicine. Some will use a to crush and grind herbs to produce herbal medicine.
==Related articles==
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*Status condition
Category:Pokémon world
it:Malattie nel mondo dei Pokémon