精神科医ってぶっちゃけなにができるの？22分動画

Good evening. I'm Takahiro Haga, a psychiatrist. Today, I'll be discussing the topic of "How Much Can Psychiatrists Actually Do?" Psychiatry is sometimes overrated, with people expecting "a doctor can cure anything," while others look down on it as "useless." Both situations arise from a lack of accurate mutual understanding. To what extent can psychiatrists help, and at what point does it become difficult? What are the limits of what patients and their families can reasonably expect, and at what point do expectations tend to be met with disappointment? I'd like to clarify and share these points. As psychiatrists, we have worked with dozens, hundreds, and sometimes thousands of patients. From this experience, we have a somewhat "map" of what mental illnesses are likely to cause problems and where they tend to stumble. On the other hand, many patients have only ever had one-on-one contact with their primary care physician. If you're considering seeing a psychiatrist, you may have never met a psychiatrist before. That's why I think it's important to first explain, in as clear a way as possible, what a psychiatrist can do. To put it simply, there are two main pillars of expertise that psychiatrists can provide. One is adjusting medication, and the other is supporting behavioral change through dialogue. When you hear "behavioral change," you might imagine just "improving lifestyle habits," but in fact, it also includes modifying thought habits. For example, we might guide someone who is dominated by strong negative thoughts to shift their outlook to something a little more realistic and flexible. Or we might help someone whose life is disrupted by a reversed day and night cycle gradually get up in the morning. Everyone knows that these things are good: going to bed early, getting up early, eating three meals a day, and exercising. But even if you know them, you still can't do them. This is where the difficulty of mental illness lies, and where medical intervention is important. However, the important question here is, "Will adjusting your lifestyle cure everything?" Unfortunately, it's not that simple. Poor lifestyle habits can be related to the onset or worsening of the illness, and often hinder recovery. However, simply making perfect adjustments to one's lifestyle does not necessarily mean that schizophrenia, depression, or bipolar disorder will be cured "in itself." For example, if a lung cancer patient exercises and eats three meals a day, will the cancer shrink? While it may improve the immune system somewhat, it's difficult to control cancer through lifestyle changes alone. Mental illnesses are similar; they're not so simple that they can be overcome with determination and positive thinking alone. Schizophrenia is often rooted in a biological "failure," such as abnormalities in the dopamine system, depression in the serotonin system, or bipolar disorder in the brain's network (e.g., an imbalance in the salience network). Lifestyle improvements and cognitive techniques primarily serve to boost self-efficacy—the sense that "I can do it"—rather than directly correcting the failure. Increasing self-efficacy certainly facilitates recovery. However, it's difficult to say that this alone will solve everything. This is also the limit of the power of behavioral change support. So, what about medication? Psychiatric medications can be broadly divided into three categories: antipsychotics, antidepressants, and anti-anxiety/hypnotics. First, anti-anxiety and hypnotics are similar in nature to anesthetics. While they don't completely reduce consciousness like general anesthesia, they do reduce brain activity by 10%, 20%, or 30%. This temporarily halts circulating anxiety and ruminative thoughts, allowing sleepless people to fall asleep. This is an extremely powerful effect. Considering how revolutionary the introduction of anesthesia was in human history, it's no surprise that these drugs, which "mildly anesthetize the brain," are useful. However, this powerful effect comes at a price. The brain works not only when we're awake, but also when we're daydreaming or asleep. In fact, it's when we're relaxed that our thoughts become more organized and new ideas suddenly spring to mind. Part of the underlying mechanism behind this is called the default mode network. Heavy use of anti-anxiety and hypnotics can easily suppress this function. While they may alleviate immediate pain, they can also impede the mental clarity that normally occurs during sleep or rest. Furthermore, taking benzodiazepines for extended periods can feel similar to being constantly high on alcohol, dulling mental alertness and increasing the risk of addiction, tolerance, and withdrawal. Therefore, if used improperly, they can be a double-edged sword. "They work, but they also come with drawbacks." Both patients and doctors need to understand this. Next, we have antipsychotics. Schizophrenia was once considered an "incurable disease," with far fewer...