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What is Hanahaki disease? 2024

What is Hanahaki Disease 2022

What is Hanahaki disease? 2024

Hanahaki Disease is an illness born from one-sided love, where the patient throws up and coughs up flower petals when they suffer from one-sided love. The infection can be removed through surgery, but the feelings disappear along with the petals.

Hanahaki disease is a fictional medical condition that originated in Japanese media, particularly in manga, anime, and fan fiction. It is a unique and fantastical concept that often serves as a plot device in romantic or tragic stories.

The basic premise of Hanahaki disease is that it is a fictional illness where the affected person coughs up or regurgitates flower petals due to unrequited love. The flowers grow within the individual’s lungs, and the severity of the condition is often linked to the depth of the unreturned feelings.

Key features of Hanahaki disease include:

  1. Flower Imagery: The condition is associated with the symbolic growth of flowers in the respiratory system. Different stories may feature different types of flowers, each with its own symbolic meaning.
  2. Unrequited Love: Hanahaki disease typically occurs when a character experiences one-sided love, and the physical manifestation of flowers is a metaphor for the emotional pain and turmoil caused by unreciprocated feelings.
  3. Cure or Tragic Endings: In some stories, characters with Hanahaki disease may seek a cure, often involving the resolution of their romantic struggles. In other cases, the disease leads to tragic consequences, including the death of the character.

It’s important to note that Hanahaki disease is a fictional and fantastical concept, and it does not have any basis in real medicine. It has become a popular trope in romantic and dramatic genres, adding a touch of fantasy to stories exploring themes of love, loss, and sacrifice. Different creators may interpret and depict Hanahaki disease in various ways, contributing to its varied portrayal in the media.

Hanahaki Disease Definition

Hanahaki Disease is an illness born from unrequited love, where the patient’s throat will fill up with flowers; they will then proceed to throw and cough up the petals (sometimes even the flowers).

One of the only ways for the disease to ‘disappear’ is if, the said person returns the feeling (it can’t be resolved with friendship; it has to be genuine feelings of love).

The infection can also be removed through surgery, though the feelings disappear along with the petals. If they choose other options or the feeling is not returned in time, then the patient’s lungs will fill up with flowers and will eventually suffocate.

There is no specific flower for the disease, but it’ll either be the crush’s favourite type of flower or their favourite colour. We can only hope for the patients and pray that the crush’s favourite flower isn’t a type of rose.

The length of the disease varies with each person. But on average, it will last up to 2 or 3 mouths, but sometimes it’ll only last a couple weeks.

For Example

The sight was sickening; the body lay limp on the carpet. stained petals and flowers surrounding them, swirling in a pool of their own blood. I took a deep breath. Then I turned to the rest of the group, keeping my head low. ‘Who said love couldn’t kill?’ I let out a low laugh.

“Darn you, Hanahaki Disease,” I curse under my breath. Tears are threatening to fall.

The illness known as Hana-Haki causes the sufferer to cough up flower petals.

The Japanese terms “Hana” (which means “flower”) and “hakimasu,” which means “to throw up,” are the origin of the name HanaHaki.

You may come across as emotional if you have a rapid change in emotion, such as being quickly furious, upset, excited, or nervous. Yet, rest assured that you are not by yourself. Have you ever had physical changes along with such intense emotions?

For instance, when you are delighted, your chest may feel warm and full; likewise, when you are tense (for instance, before exam results), your stomach may be filled with butterflies. Whether or not you want to accept it, these are normal bodily reactions to experiencing emotions.

Imagine yourself in a heartbreak situation and suddenly starting to vomit flower petals. It seems strange and unrealistic. Indeed, it is! Guess what? This unreal state of affairs even has a name! The illness is known as Hana-Haki. Yet, does it exist there? Let’s investigate!

What is the meaning of Hanahaki disease?

The fictional HanaHaki disease is common in stories from eastern Asia. They’re especially well-known by readers of Japanese graphic novels called manga. A character catches HanaHaki disease when they experience unrequited love. That means they have a crush on someone who doesn’t like them back.

Hanahaki disease is a fictional and symbolic concept that has been used in manga, anime, and related media. The term “Hanahaki” literally translates to “flower vomit” in Japanese. The disease is a fantastical expression of unrequited love and the emotional pain associated with it. Here’s a breakdown of the symbolic meaning:

  1. Unrequited Love:
    • The central theme of Hanahaki disease is unrequited or one-sided love. When a character in a story suffers from Hanahaki disease, it is often an allegory for their unreturned romantic feelings toward another character.
  2. Symbolic Flowers:
    • The flowers that the affected person coughs up or regurgitates symbolize the emotions and the depth of their love. Different stories may use different types of flowers, each with its own symbolic meaning. The growth of these flowers within the person’s body reflects the emotional turmoil caused by unreciprocated feelings.
  3. Symbolic Pain and Sacrifice:
    • The physical symptoms of coughing up flowers represent the internal pain and suffering associated with unrequited love. The act of coughing up flowers is a metaphorical expression of the character’s emotional struggle.
  4. Resolution or Tragedy:
    • In stories featuring Hanahaki disease, the resolution can vary. Some characters may seek a cure for the disease, often involving the reciprocation of their feelings. In other cases, the disease may lead to tragic consequences, including the death of the character as a symbol of the sacrifice made for love.
  5. Metaphor for Expression:
    • Hanahaki disease serves as a metaphorical way for creators to explore the complexities of love and its impact on individuals. It adds a fantastical and dramatic element to storytelling, allowing for emotional and symbolic expression.

It’s important to note that the meaning and symbolism of Hanahaki disease can vary between different stories and interpretations. The concept has resonated with audiences as a poignant and creative way to address themes of love, longing, and sacrifice in fictional narratives.

HanaHaki: A fictitious disease

You’re not crazy if you think it’s strange when someone vomits flower petals because they’re sad. Why? Because it isn’t even remotely accurate. Well, so how does it exist if it isn’t real? It is confirmed in the same way that Batman or Sherlock Holmes is. We do indeed mean fiction.

It says as much in its definition. It’s a made-up condition that people get when they experience unrequited love. The terms “Hana,” which means “flower,” and “hakimasu,” which means “to throw up,” are combined to form the name HanaHaki. Coughing up flower petals, the primary symptom of Hana-Haki illness, results from combining the two words.

What is reverse Hanahaki?

Some speculate that its a mutation of the original Hanahaki disease. Reverse Hanahaki is where the person who loves the other doesn’t get the disease, but instead, the one who they love does. The flowers can be surgically removed but it’d be removing the person’s love for the one who has it.

What anime has Hanahaki disease?

The Trope Codifier is the 2008 Shoujo manga Hanahaki Otome, or “The Girl Who Spit Up Flowers”, by Naoko Matsuda, which is about a girl with unrequited feelings who begins spitting up flowers. The symptoms are: strong chest pains and flowers coming from the heart or lungs, and then throwing them up.

Hanahaki disease is a fictional concept that has been featured in various anime and manga series as a plot device. It is often used to explore themes of unrequited love, sacrifice, and emotional turmoil. Here are a few anime and manga titles that have included Hanahaki disease:

  1. “Vocaloid” (Song Series):
    • The Hanahaki disease concept is featured in some Vocaloid songs, where characters experience the symptoms of the disease due to unrequited love. Notable examples include songs like “Kokoro” and “Rotten Girl, Grotesque Romance.”
  2. “Ao Haru Ride” (Blue Spring Ride):
    • While the main plot of “Ao Haru Ride” doesn’t revolve around Hanahaki disease, there is a side character who experiences symptoms of the condition, contributing to the emotional depth of the story.
  3. “Black Bird”:
    • This manga series includes a storyline where a character develops Hanahaki disease due to complicated romantic feelings. The concept is used to explore the challenges of love in a supernatural setting.
  4. “D.Gray-man”:
    • In the “D.Gray-man” manga series, there is a character who experiences Hanahaki disease as a result of unrequited love. The concept is introduced in a later arc of the series.
  5. “The Case Study of Vanitas” (Vanitas no Carte):
    • This manga series features a character who suffers from Hanahaki disease, and it becomes a part of the larger narrative, exploring the consequences of unfulfilled love.
  6. “Love, Chunibyo & Other Delusions” (Chuunibyou demo Koi ga Shitai!):
    • While not a central theme, Hanahaki disease is briefly mentioned in this anime series, adding a touch of dramatic flair to a character’s background story.

Keep in mind that the use and portrayal of Hanahaki disease can vary between different anime and manga series, and the concept may be explored in different ways based on the creative choices of the respective creators. If you’re interested in exploring this concept, it’s recommended to check out the specific titles mentioned.

How and when did the HanaHaki sickness first appear?

2009 would mark that time. Hanahaki Otome, also known as The Girl Who Spit Flowers, is a shoujo manga (Japanese comics) that first featured the HanaHaki sickness. Naoko Matsuda, a well-known manga author, wrote it.

The main character in this story is afflicted with a slow-moving illness that starts with an intense chest discomfort that feels like the heart and lungs are blooming with misery. It gradually progresses to stomach grumbling and vomiting. A teenage girl named Katsuki, who suffers heartbreak, is the story’s center.

She starts with typical heartache symptoms, similar to those of a moderate depressive episode. However, when she coughs up flower petals, it escalates over the months into something more serious. 

When her illness has reached its worst, she has even been known to vomit a whole flower all at once. She is instantly diagnosed with HanaHaki, but sadly she passes away.

It’s fascinating to note that despite the tragic conclusion, the book and its trope gained popularity for their extreme melodrama, beauty, and agony. In actuality, it was thought that dying by HanaHaki was a sorrowful but beautiful theme.

Due to the fascination of manga and anime authors and fans throughout East Asia, particularly in Korea, China, and Japan, the HanaHaki sickness later became a rage.

What does you made flowers grow in my lungs mean?

It speaks of the internal struggles caused by even the greatest thing that can happen to any human being: love. Inspired the quote carried in its name, the work tells the story of a love that overwhelms and suffocates.

The phrase “you made flowers grow in my lungs” is a metaphorical expression often used to convey intense and complex emotions, particularly those associated with love, longing, or heartache. This metaphor suggests that the person’s feelings are so powerful and overwhelming that they have a physical impact on their well-being.

In the context of Hanahaki disease, a fictional concept used in anime and manga, the idea of flowers growing in one’s lungs is a symbolic representation of unrequited love. The presence of flowers is not literal but serves as a creative and dramatic way to illustrate the pain, emotional struggle, and internal turmoil that can accompany feelings of love that are not reciprocated.

So, when someone says “you made flowers grow in my lungs,” they are expressing that their emotions, often romantic, have become so intense and unmanageable that they feel a physical manifestation of that emotional pain. It’s a poetic and vivid way of describing the impact of powerful and unreturned emotions on one’s mental and emotional state.

Who came up with Hanahaki disease?

HanaHaki disease emerged in a shoujo manga (Japanese comics addressed to 8- to 18-year-old girls) named Hanahaki Otome or The Girl Who Spit Flowers. It was written by popular manga author Naoko Matsuda.

The concept of Hanahaki disease, a fictional illness associated with unrequited love and symbolized by the coughing up of flowers, is a creation of the Japanese entertainment and creative community. The exact origin of the concept is not attributed to a specific individual, but it has been popularized through various media, including manga, anime, and fan fiction.

The idea of diseases or conditions manifesting as a physical representation of emotions is not uncommon in storytelling. Hanahaki disease, in particular, has resonated with audiences as a poignant and dramatic way to explore themes of love, longing, and sacrifice in fictional narratives.

The concept may have been introduced in specific manga or anime series, and its popularity may have grown as it was adopted and adapted by different creators within the anime and manga community. It has become a recognizable trope and a creative tool for expressing intense emotions within the context of fictional narratives.

It’s worth noting that the concept of Hanahaki disease is not rooted in reality; it is purely a fictional and fantastical idea used for storytelling purposes. As with many creative concepts, its interpretation and use may vary among different creators and within different works of fiction.

What is the flower for unrequited love?

Daffodil symbolizes regard and chivalry. It is indicative of rebirth, new beginnings, and eternal life. It also symbolizes unrequited love. A single daffodil foretells a misfortune while a bunch of daffodils indicate joy and happiness.

In the context of symbolism and language of flowers (floriography), different flowers are often associated with various emotions, including love. While there isn’t a universally recognized flower specifically designated for unrequited love, some flowers have been historically associated with the theme of love and heartache. The interpretation of flower symbolism can also vary across cultures and historical periods. Here are a few flowers that might be associated with unrequited love:

  1. Forget-Me-Not: Forget-me-nots are often associated with true and undying love. In the context of unrequited love, the flower may symbolize a desire to be remembered despite the love not being reciprocated.
  2. Red Roses: While red roses are widely known as a symbol of passionate love, in the context of unrequited love, they may symbolize unfulfilled or unreturned feelings.
  3. White Roses: White roses traditionally symbolize purity and innocence, but they can also be associated with unrequited love and conveying a sense of heartache.
  4. Yellow Carnations: Yellow carnations can be associated with rejection or disappointment in love. They may symbolize unrequited feelings or a sense of dejection.
  5. Aconite (Wolfsbane): In some contexts, aconite or wolfsbane is associated with unrequited love and heartache. It is considered a toxic plant, and its use in symbolism may represent the pain associated with unreciprocated feelings.

It’s important to note that the symbolism of flowers is subjective, and interpretations can vary. Additionally, the concept of associating specific flowers with emotions is often more prevalent in historical and cultural contexts than in contemporary Western societies.

In the context of the fictional Hanahaki disease, various types of flowers may be used as symbolic representations of unrequited love, depending on the creative choices of the author or creator. The flowers are not necessarily based on real-world floriography but are chosen for their visual and symbolic impact within the narrative.

Is this fictitious illness treatable?

No, and yes! The victim can get better if the other person changes their mind and feels the same way about them or the victim. Another choice is surgery. Similar to the sickness, some skilled imaginary doctors can operate to remove the blooms. As a result, there is no possibility of the love feelings returning. That is certainly intriguing.

Hanahaki disease is a fictional and fantastical concept created for storytelling purposes in manga, anime, and related genres. As of my last knowledge update in January 2024, Hanahaki disease is not a real medical condition, and it has no basis in actual medical science. It is purely a narrative device used to explore themes of unrequited love, sacrifice, and tragedy in fictional stories.

Since it’s not a real illness, there is no real-world treatment for Hanahaki disease. In the stories where it appears, the resolution of the condition often depends on the narrative direction chosen by the creators. In some cases, characters find a cure for the disease through various means, while in others, the disease may lead to tragic consequences.

It’s important to recognize the distinction between fictional elements created for entertainment purposes and actual medical conditions. If you have health concerns or questions, it’s always advisable to consult with medical professionals who can provide accurate and reliable information based on real medical science.

Is the Hanahaki disease real? Facts in 2024

No. It is a fictional illness that occurs when the person who loves you doesn’t love you back. Often seen in characters in fan fiction, someone infected with Hanahaki disease will have a throat that fills up with flowers, and they cough out the petals.

If the person’s love is returned, then the disease is cured. The other “cure” is surgical removal, and along with the flowers, the feelings are removed as well. If left untreated, it is said that the flowers will suffocate the lungs, and the lovesick person will suffocate and die.

While certainly a dreadful faux demise, I would recommend googling Hanahaki and looking at the images, as the illustrations are quite fascinating! It is actually just a fictional disease that is born of one-sided love.

The patient or victim is effected because their crush or attraction hasn’t returned their feelings. Hanahaki Disease has the victim coughing up bloody flower petals because the disease takes place in the lungs. The disease can be cured, but the feelings for that person disappear. The person can return the feelings, and the disease will stop affecting them.

For Example:

Hanahaki disease is not real. Just like the titular virus in Dan Brown’s novel, The Inferno, the Hanahaki disease is a work of fiction. We could call it lovesickness because it has to do with love and romance. Okay, now you know quite well that the Hanahaki disease is not real and never will be. But I wrote a little more on this fictitious disease, which I think you would find interesting. Continue reading!

When one develops this fictitious disease called Hanahaki, a lot of things can happen. It is reported that people who suffer from this disease cough up flower petals. Now the factor responsible for this sickness is unrequited love. It simply means loving someone and not getting loved in return.

Let me use John (a man) and Janny (a woman) to demonstrate the meaning of this disease. Assuming both of them (Peter and Jane) are close,. John loves Janny to the point that he can take a bullet for her. Unfortunately, the relationship is one-sided. John loves Janny, but Janny doesn’t love or feel the same way.

According to Hanahaki disease, John may develop this disease due to unrequited love. In this case, his lungs will become filled with flowers and their roots, growing in his respiratory tract. The only way John can become better is for Janny to return his love. The disease can also be removed via surgical operation. But if urgent action is not taken, the victim may die.

What are some fictional diseases, like Hanahaki Disease?

Hanahaki isn’t the only fictional disease we have heard of, and it won’t be the last. The entertainment industry and fictional writers are always cooking up things to inspire their audience. So we would see more of the Hanahaki-type diseases as time progresses. I would also like to say that there are tons of other conditions that are similar to Hanahaki. They are fictional diseases that are not real.

But let me tell you something: almost all the fictitious diseases out there have a real-world equivalent. In other words, their creation was inspired by the real-life illness itself.

Mad Snail Disease

Let’s go over the different diseases:

Mad Snail Disease

Remember the widespread mad cow disease that hits the news now and then? The illness gave birth to the Mad Snail Disease. The Mad Snail disease isn’t real. The term was used in the popular cartoon program, SpongeBob.

This disease, as described in the cartoon, developed following a bite from an infected snail. And once bitten, the victim develops messy pants, bloodshot eyes, a loss of balance, and untrimmed toenails.

Mad Zombie Disease

Have you watched Zombieland or The Walking Dead? These are movies where humans are portrayed as brain-eating monsters. The Mad Zombie Disease is also a work of fiction. There is nothing real about it.

According to those behind the idea of the Mad Zombie Disease, it is said that one bite transforms an individual. Now guess the real-world equivalent of this disease. Well, it’s the mad cow disease once again!

Ancient virus:

The ancient virus is a rare viral strain found in queen ant genes. Discovered by ‘Alexia Ashford’ when she was studying ants. When combined with the progenitor virus, it creates the powerful t-Veronica virus.


Sexually transmitted diseases exist. They can also move from one human to another. Now, what about the interaction between a human and a robot? Don’t you think a sexually transmitted disease can occur when humans have intercourse with robots?

Well, with all the numerous sex dolls coming from Japan and the rate at which people are patronizing them, a day would come when diseases like this can manifest.

But I hate to break it to you that Electrogonorrea isn’t real. And it never existed, which is good news for sexually active toasters out there.

Angel toxicosis:

causes the victim to eventually lose the ability to taste, sleep, cry, feel pain, and talk. It also increases the victim’s hearing, strength, and sight abilities.

As well as eliminating the need to eat and sleep. In the early beginnings, it allows victims to gain crystal-like wings and fly until the disease is destroyed. The final stage of this disease causes the victim to give up his or her heart and memory.

Bendii syndrome

Another disease you may be hearing about for the first time is “Bendii syndrome.” It’s also not a real disease like Hanahaki. But the concept looks scary, and yes, it has a real-world equivalent.

Bendis syndrome, according to those behind the idea, is a generative neurological illness. It affects the elderly Vulcans, a group of fictional extraterrestrial humanoid species from outer space. The disease is believed to cause fever, weakness, fatigue, and emotional control.

Now, the real-world equivalent of this disease is Alzheimer’s disease. And it’s a disorder that can cause the brain cell of humans to waste away. That is, degenerate and die. Alzheimer’s disease destroys one’s memories, including other forms of mental functions.



If you haven’t read any of Dan Brown’s novels, The Inferno should help change your mind. But Dan isn’t new to the game. He has written several books, including The Da Vinci Code, Angels and Demons, and a host of others.

However, The Inferno is his latest mystery and detective fiction book. In the book, Dan wrote about the titular virus, which isn’t real, though.

The titular virus, according to the book, renders its victims infertile and is waterborne. But the villain in the book wanted it to destroy many people’s lives and decided to make the virus airborne.

One amazing thing you need to know about this titular virus is that it has a real-world equivalent, and it’s called the “Infamous Black Plague.”

Can You Catch HanaHaki Disease?

It looks different for different people. The trick is to try out different methods and do plenty of self-reflection. That’s how you can figure out what works for you.

For many people, pausing and taking a few deep breaths helps them manage their emotions. Others find it helps to listen to music, read a book, or exercise.

HanaHaki Disease

Stepping away from a difficult situation helps many people manage their emotions. If you’re feeling overwhelmed by emotion, try taking a break.

Cook and eat a meal. Go for a long walk. Do something you enjoy to get your mind off of it. When you come back, you’ll probably feel more able to handle the issue—and your reaction to it.

You may not really be at risk of catching HanaHaki Disease, but heartache itself can certainly feel like an illness. Have you ever found yourself nursing a broken heart?

We hope not! If it ever does happen, try out a few of the strategies we talked about. You may be surprised at how much better you feel.

Find a friend or family member who can help you with these activities!

Everyone has their own way of regulating their emotions. Talk to an adult you know, like a family member, teacher, or doctor. Ask them how they regulate their emotions. Can they offer you strategies to try? What works best for them?

HanaHaki isn’t the only fictional disease out there. Read about a few others, like Dragon Pox or Hawaiian Cat Flu. Do you think either of these illnesses could have had real-world inspiration? Discuss with a friend or family member.

Think about the last time you felt a very strong emotion. Why were you feeling the emotion? How did you feel physically? What were you thinking about? How did you react to how you felt? Write a short personal narrative about what you felt and how you reacted to it.

Final words:

Hanahaki Disease is an illness born from one-sided love, where the patient throws up and coughs up flower petals when they suffer from it.

Hanahaki Disease (花吐き病 (Japanese); 하나하키병 (Korean); 花吐病 (Chinese)) is a fictional disease in which the victim coughs up flower petals when they suffer from one-sided love. It ends when the beloved returns their feelings (romantic love only; strong friendship is not enough) or when the victim dies. It can be cured through surgical removal, but when the infection is removed, the victim’s romantic feelings for their love also disappear.

The trope was popularized in East Asian fandoms (Korean, Japanese, and Chinese) before it was used by Westerners. In fandom, it appears most frequently in relation to BL pairings.

The Hanahaki Disease trope is not used exclusively within fandom; many people have become intrigued by the concept and created non-fannish artwork, poetry, songs, music videos, and other creative works based around the concept. However, Hanahaki Disease is particularly popular within the fandom due to its potential for angst, hurt or comfort, pining, and general romantic tension.

There is no set time for how long this disease lasts, but it may last from 2 weeks to 3 months, or in rare cases, up to 18 months, until the victim dies unless the feelings are returned or the plants are surgically removed. There is also no set flower that blossoms in the lungs, but it may be the enamoured’s favourite flower or favourite colour.

HanaHaki Disease

Hanahaki can be cured through surgical removal of the plant’s roots, but this excision also has the effect of removing the patient’s capacity for romantic love. It may also erase the patient’s feelings for and memories of the enamoured. It can also be cured by the reciprocation of the victim’s feelings.

These feelings cannot be feelings of friendship but must be feelings of genuine love. The victim may also develop Hanahaki disease if they believe the love to be one-sided, but once the enamoured return the feelings, they will be cured.

In some literature, other symptoms can include fever, uncontrollable shaking, loss of appetite, low body temperature, and hallucinations. Even after curing, with or without surgery, there can be irreversible damage to the lungs, and, although very rare, in some cases the disease cannot be cured.


No, Hanahaki disease is not real; it is a fictional concept that originated in Japanese media, particularly in manga, anime, and related genres. This fictional disease is a creative and fantastical idea used as a plot device in storytelling.

The basic premise of Hanahaki disease involves individuals experiencing symptoms such as coughing up or regurgitating flower petals due to unrequited love. The flowers grow within the person’s lungs, and the severity of the condition is often linked to the depth of the unreturned feelings.

While the concept of Hanahaki disease has been explored in various fictional works, it has no basis in real medical science. It is purely a narrative device used to convey themes of love, longing, and sacrifice in a fictional context. If you encounter the term in manga, anime, or fan fiction, it’s important to understand that it is part of a fictional storyline and not an actual medical condition.

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