> Pretty soon you do have the symptoms, you see them every time you encounter this thing. Your comment seems to imply that psycho-somatic symptoms are not real

> Pretty soon you do have the symptoms, you see them every time you encounter this thing. Your comment seems to imply that psycho-somatic symptoms are not real symptoms and people who suffer from them are behaving irrationally. If so, you are incorrect. Psycho-somatic symptoms are real measurable physical problems in the body that are triggered by the brain. They are not imagined problems. For example, my perfume sensitivity triggered real nasal congestion. You could hook up a nasal flow meter and record data showing that my nostrils were blocked. For people with chronic lower back pain, you could connect a sensor to the pain nerves and measure the pain signals going from the lower back muscles into the spinal column. Suffering from a psycho-somatic disorder does not imply that the person is rational or irrational. Psycho-somatic problems arise from everyday life situations. For example, my own perfume sensitivity developed over a year of high pressure at the office. My desk was near the women's restroom. Several times an hour, people wearing perfume would walk by my desk to use the restroom, and then walk by again a few minutes later. I became distracted when I smelled their perfume. I would respond to the distraction by desperately forcing myself to concentrate. When concentrating was difficult, I felt more stress. Gradually, my brain developed an automatic response: smell perfume -> feel anxiety and stress. Unfortunately, this was a self-reinforcing habit. After I recognized the root cause, I was able to un-learn the emotional habit and cure the psycho-somatic disorder. Your tone implies that people develop psycho-somatic disorders after "falling for" some false idea. That is incorrect. Some would consider it extremely condescending and would take offense. When a person suffers from excruciating lower back pain, they are not "falling for" the idea that they have a back injury. They are just suffering. They try to understand why they are suffering. "I have a bad back" is a reasonable explanation. The knowledge of the most common cause of lower back pain is not yet widespread: that lower back pain is usually caused by subconscious tensing of muscles. Please re-examine your bias about psycho-somatic disorders. They are real symptoms suffered by rational people. I assure you that your mother is suffering real symptoms. They are very likely not psycho-somatic. I commend her relentless search for root cause and cure. You could help her: Take her to consult with experts, help her objectively record her symptoms, help her systematically test different hypotheses and interventions, find a fun fitness class and attend it with her, research healthy recipes and cook them together, and make sure she takes enough vitamin D3. My own mother developed cancer and there was little I could do to help her.