more commonly known as "hanahaki disease," those afflicted with this disease are fated to cough up flowers as long as their love remains unrequited. this is often fatal, with flowers completely consuming their respiratory system. there are two ways to cure it: either have your feelings returned, or have it forcibly removed from your body through surgery, though the latter will force you to lose all memory of the person you love.

from an online novel of the same name, a syndrome caused by unrequited love that causes a person to begin to forget the person they love. eventually, they forget them completely, and the only way to retrieve those memories is via that person's death.

similar to hanahaki disease. people suffering from unrequited feelings will cry "stars"; they're similar to glass and are incredibly painful, and eventually the person afflicted with this disease will go blind. the sound they make when you cry can be pretty much anything.

an affliction where emotional or mental scars physically appear on the body. depending on the type of trauma, the scars will look different. it can be healed by removing the trauma, but this is only temporary: the symptoms can always return.

a disease where an afflicted person grows wings. as the wings become more angelic/divine, however, the person attached to them grows weaker; eventually, they die.

a disease where flowers bloom out of someone's body. this can be on their body proper or from various orifices, such as their eyes, ears, and mouth. alternatively, a disease where the afflicted person grows crystals all over their body, until they're completely consumed.