For centuries, people have believed that unusually vivid or colorful dreams may be a sign of schizophrenia. This is sometimes explained by the idea that mental disorders can alter a person’s perception of the world around them. However, the available scientific evidence is insufficient to consider colorful dreams associated with schizophrenia or to use them to detect the disorder.
Fact-check: the claim that colorful dreams indicate schizophrenia is not supported.
Colored Dreams: A Common Phenomenon
Dreams can vary widely: they may be colorful or black and white, vivid or dull, and may contain clear images, movement, and different shapes. What a person remembers after waking depends not only on the dream itself, but also on memory and on how thoroughly they are questioned about it.
Studies show that colorful dreams are common. For example, in a study published in the International Journal of Dream Research, 63.3% of participants reported that almost all of their dreams were colorful, while another 35.8% said that color was present in most of their dreams.
The results are also influenced by the research method. In earlier studies, people were more likely to remember colors when they were awakened during a dream and asked about its content immediately afterward. When people simply described a dream after waking, they mentioned color less often.
In other words, colorful dreams are not unusual and, by themselves, do not indicate the presence of a mental disorder.
Where Did the Link to Schizophrenia Come From?
This claim probably has a scientific source, but it is greatly oversimplified in popular retellings.
Researchers study color perception in people with schizophrenia-spectrum disorders. A systematic review published in 2024 included seven studies involving 695 people. In some of them, participants with schizophrenia made more errors when distinguishing colors or recognized them more slowly than control groups.
However, these studies examined how participants perceived and recognized colors while awake, not what kinds of dreams they had. In addition, differences between groups in individual studies do not prove that schizophrenia causes changes in color perception, nor do they mean that such features are characteristic of everyone with this diagnosis.
This distinction is important. In these studies, color perception was assessed as one aspect of visual information processing during wakefulness, whereas dreams arise in a different state of the brain — during sleep. Therefore, the findings on color perception cannot be directly applied to dream content or used to conclude that vivid or colorful dreams are associated with schizophrenia.
The review’s authors also emphasize the need for further research. There are relatively few available studies, their results may differ, and the quality and design of the research limit the ability to generalize the findings. At present, characteristics of color perception are not considered an independent diagnostic sign of schizophrenia.
What Are Actually Considered Symptoms of Schizophrenia?
Schizophrenia cannot be diagnosed based on a single unusual dream or an isolated feature of perception. It is a serious mental disorder that can manifest in different ways and usually involves several persistent symptoms.
The U.S. National Institute of Mental Health (NIMH) identifies psychotic, negative, and cognitive symptoms. Psychotic symptoms include hallucinations, delusions, and disorganized thinking. Social withdrawal, reduced motivation, emotional detachment, and difficulties with attention, memory, and information processing may also occur.
Ordinary dreams should not be confused with hallucinations. During a dream, a person may see people, objects, and events that do not exist in reality — this is a normal part of dreaming.
In psychosis, the perception of reality is disrupted while the person is awake. For example, someone may hear voices that no one else can hear, see nonexistent objects, or be convinced that other people are sending them special messages.
Therefore, the mere fact that someone has an unusual dream does not indicate psychosis.
What If Dreams Have Become Very Vivid?
Changes in dreams do not automatically mean that a mental disorder is developing. Sleep patterns, stress, emotional state, and frequent awakenings can all affect dream content and how well a person remembers their dreams.
If dreams become more vivid, emotional, or saturated with color, this alone is not a diagnostic criterion for schizophrenia and does not allow anyone to conclude that the disorder is present.
A person should seek professional help not because of the color of their dreams, but if other persistent changes occur: for example, if they begin hearing voices or seeing things while awake that other people do not perceive, develop beliefs that do not correspond to reality, experience noticeable disruptions in speech or thinking, have difficulty managing everyday activities, or undergo a sharp change in behavior. Such symptoms require professional evaluation.
Conclusion:
Colorful dreams are not a sign of schizophrenia.
Studies have reported possible differences in performance on certain color-perception tests between some groups of people with schizophrenia-spectrum disorders and control groups. However, these findings concern color perception while awake, do not establish a cause-and-effect relationship, do not necessarily apply to everyone with schizophrenia, and have no direct connection to dream content.
Colorful dreams are a common phenomenon in themselves. Therefore, the claim that “if a person has colorful dreams, this may be a sign of schizophrenia” is misleading and lacks sufficient scientific support.
