The disorder where you think dreams are real is called Dissociative Identity Disorder (DID), formerly known as Multiple Personality Disorder.
DID is a mental health condition where a person experiences a disruption of identity characterized by two or more distinct personality states. These states can take control of the person's behavior, thoughts, and feelings, leading to a disconnect from reality.
In DID, individuals often experience a loss of memory, especially for events that occur during a different personality state. This can lead to confusion and disorientation, making it difficult to distinguish between dreams and reality.
It's important to note that not everyone with DID experiences a blurring of dreams and reality. However, it's a common symptom that can be particularly distressing for those who struggle to differentiate between their waking and sleeping experiences.
If you suspect you or someone you know may be experiencing DID, it's crucial to seek professional help from a qualified mental health professional. They can provide accurate diagnosis and appropriate treatment, which may include psychotherapy, medication, or a combination of both.