After Hu Peng left, Mu Chun leaned on the back of the chair and watched the dynamics of the little watermelon for a while.

Mu Chun looked at it and laughed, thinking that this smile was really interesting, even if it was another personality, he was so passionate about public welfare and so caring.

It's just that the little watermelon looks more cheerful and lively than Mu Xiao.

It is indeed strange that there should be a big difference between the two personalities, usually one is more repressive and the other is the opposite - cheerful, lively or even overly cheerful and lively, so that there will be some impulsive behavior.

The first two times she met a little watermelon, Mu Chun didn't notice that she was overly lively and cheerful.

Maybe it's too short, maybe it's just a short encounter and through the Internet that you can't understand what kind of personality traits the real little watermelon is.

Finally stopped a little from the continuous busyness, and Mu Chun called Zhang Wenwen back.

As a result, the call prompted that no one answered.

Just as he was about to put his phone away and start reading Pan Guangshen's records, Mu Chun found that Mu Xiao had left him a message, "Call me back when you have time." ”

So Mu Chun called Mu Xiao back, and Mu Xiao had no patients at this time.

"It's Zhang Wenwen's patient's case, I came to the clinic once, and I've seen this case before." Mu Xiao said calmly.

This is a case of doppelganger, where a patient said to see another self and a second or even a third self.

It can be said that this is not an uncommon plot in human literature, especially since some famous authors seem to have a very strong and romantic interest in creating a work about doppelganger.

Whether it's the brilliant writer of horror, Edgar Allan Poe, or Maupassant's short stories, or the Argentine writer Borges, there have been scenes where a protagonist meets another self.

Poe's protagonist stabs his doppelganger, only to find that he was the one who was injured. Borges chases after another Borges, and finally discovers that maybe this is one person.

The poet Eliot wrote a similar poem about the third man who followed him in The Waste Land.

The poet Heine even created a poem about doppelgangers.

If writers like literary material such as doppelgangers, then from a medical point of view, this second existence of self can be regarded as some kind of "hallucination", more specifically "out-of-body experience".

Many literary and cinematic works and even legends will use a perspective floating in the air to represent this out-of-body experience, and when people are describing some near-death conditions, they will also say, "I feel a moment of me leaving my body, I see me lying there, the doctors are busy around me, they are nervously looking at the monitors, nervously treating me, I should be in pain, but I can't speak, I can't feel anything."

But the other me looked at what was happening to me with ease, and I was so helpless. I want to go into my body, I want to merge with myself, but no, I can only look at this other me from the outside, that's it, exactly the same two mes. ”

This kind of thing has been passed down more than once in human culture.

Zhang Wenwen's patients may be influenced by such cultural works, or they may be fascinated by mind-body dualistic thinking, or they may be in a dissociative state, such as schizophrenia, which may also have similar hallucinations.

If not, or at the beginning of the examination, it should be necessary to make a differential diagnosis of what this hallucination is. Why can't the brain integrate this state, why does it construct a complete body consciousness outside of itself?

Often, this extra body awareness can be frightening and incomprehensible to those around you.

Theoretically, almost every part of the body can have phantoms, but the brain will not have them, that is, there will be no phantom brains, because the brain is where the phantoms appear.

In the case of BIID patients, the situation of doppelgangers will be more interesting, BIID patients will feel that they have an extra arm, that arm is not their own, it almost resembles a [Cthulhu]-like existence, full of eccentricity, heterogeneity, unimaginable and hostile.

No matter how intact it looks, whether the arm is jointed, bones are intact, or even skin is neat, even if it is flexible...... It's all weird and intolerable to the BIID patients, they hoard tourniquets, they use dry ice, they always imagine themselves with an extra arm - how bad this thing is, how it can end up on me.

Even if they are very resistant to a part of the body structure, the consciousness of the BIID patient is still in their own body, they will not be aware of the arm, or part of my consciousness is also in the arm.

One is a state of isolation, and the other, as if a complete replication, the latter feels that he dwells in the body outside the body, that body is whole.

"Mu Chun, are you listening?" Mu Xiao's voice asked softly on the other end of the phone.

"I'm listening, so is it a hallucination or?" Mu Chun asked.

"Accompanied by convulsions, I didn't tell Zhang Wenwen at the beginning." Mu Xiao said.

"You checked his medical records?" Mu Chun felt that he was asking a little knowingly, it was obvious that either the patient had a convulsion when he was in the physical and mental department, or Mu Xiao must have learned from the patient that he had had a convulsion, and the easiest way should be to record the medical records.

Mu Chun asked about the age of the first seizure, and Mu Xiao said that the only time in the medical record was the most recent seizure was a month ago.

Considering that the patient is an adult, there is no hypokalemia and low sodium, and at the same time excludes convulsive reactions caused by high fever, Mu Xiao believes that intracranial infection or intracranial mass lesions should be considered.

"But there were no recurrences in a month." Mu Chun walked to the windowsill and said while looking at Banxia.

"Yes, I asked the patient if he had another seizure in the past month, and the patient denied it." Speaking of this, Mu Xiao's voice hesitated slightly.

Mu Chun helped her out, "Then you have to consider an intracranial space-occupying lesion." ”

"Well, yes, do you remember that case? We used to learn in class, a 22-year-old young man, saw his body sitting in the office and playing on the computer, at that time he wanted him to get up and get out of his seat, but he couldn't sit down, he almost went crazy, whether he wanted to go back to that body or wanted to move that body for a while, he couldn't sit down, he was completely panicked out of control, I remember the book said so. ”