the Mind-Body Connection: Psychological Impact on Physical Health - Psychiatry

Psychological factors can significantly impact physical health?

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Hello, first of all, I have no bad habits; I just often work 12-hour shifts (physical labor, I can only sit during breaks).
I take a half-hour break for meals and attend night school two days a week (this has been ongoing for a year and a half), which leads to late nights.
Initially, I only experienced slight dizziness, which would resolve whether I sat down or not, and I was still able to work without issues.
Gradually, I began to experience chest pain, a feeling of pressure in my heart, and difficulty breathing.
Occasionally, I would become short of breath after just a few steps, and sitting down no longer helped with the dizziness.
Eventually, I fainted, fell, and was unconscious on the ground for a period of time.
After that, I felt extremely weak and unable to move for two to three days, making it impossible for me to work.
I have been experiencing these symptoms for six months (two months after the initial dizziness, my weight dropped sharply to 44 kg from a standard weight of 48 kg, and it has continued to decline).
After testing for various conditions with no abnormalities found, the doctor mentioned something about the vagus nerve and suggested I could relax, stating there was no treatment but that I could avoid triggers.
My condition is such that walking or standing for one to two hours leads to dizziness that escalates uncontrollably, severely impacting my normal life and survival for the past six months; I spend about 80% of my time in bed.
The physical state I have been in for six months has caused significant financial stress.
Some doctors have suggested I see a psychologist, which might help.
My family background is quite special, and the environment I grew up in for over a decade has left me feeling fearful and deeply saddened.
Around the age of 12 (before that, I thought their harmful behavior was love, but it became increasingly painful as I grew older), I began to experience headaches, a feeling of emptiness in my mind, and trembling hands and legs whenever I heard my parents speak or saw them (even when I felt neutral).
I could even distinguish my parents' footsteps on the street as if I had superpowers, and their footsteps made me very anxious.
Occasionally, I would confide in friends about the violence at home; they noted that I would cry suddenly and intensely, but I would quickly regain my composure, as if nothing had happened after crying.
Now, I am no longer as fearful of them, but I often have nightmares where I scream (dreaming of family while I resist).
Sometimes, I am unaware that I am screaming in my sleep until others tell me.
I started having nightmares around the age of five, waking up crying from the same dream about my family.
I no longer have that dream, and when I wake up, I feel calm without any particular sadness or fear.
When I see my family, my mind goes blank, and my hands tremble, but it is just a natural bodily reaction without any specific emotions.
I believe I can handle my psychological state; I have never seen a psychiatrist.
A doctor mentioned that my psychological condition, marked by sadness and fear for over a decade, could materially affect my body.
What illness do you think I might have? I genuinely feel fine psychologically, but now my body is suddenly deteriorating, and medical examinations show no issues.
Thank you for taking the time to read this.
I lack the courage to see a psychiatrist, but I wanted to ask online first.
If medication treatment is necessary, I will consult a doctor.
Thank you.

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Wang, 10~19 year old female. Ask Date: 2015/11/30