What does the legendary blood sickness feel like?

Hemopathy is a hysteria, that is, an overreaction of consciousness and body caused by touching or seeing or smelling blood. There are panic, palpitations, dizziness and other reactions in consciousness, and physiological and physical manifestations are increased blood pressure, increased heart rate, nausea, and limb weakness. Sickness actually originates from conscious activity in the cerebral cortex.

The brain sends instructions to secrete relevant hormones, resulting in physiological and somatic responses.

The patient sees blood and produces syncope, which is mainly manifested as dizziness, nausea, dizziness, palpitations, followed by paleness, cold sweat, cold limbs, decreased blood pressure, weak pulse, and even sudden loss of consciousness. The patient should first be placed on a flat bed, fed warm water or sugar water, rested for 10 to 15 minutes, and generally recovered, and if necessary, should be given medication to resuscitate**.

When I took the blood test for the college entrance examination, I was still very confident to go to the queue, thinking that this person who couldn't escape would have to be drawn sooner or later, what kind of blood sickness? Don't be hypocritical if you don't have it! There is no such thing, don't be afraid, don't be afraid, keep a normal heart!

As a result, it started to be fine, when I got to the top three, I suddenly had a weak foot and almost fell, and then I squatted down (almost knelt down so quickly squatted), and then my whole body was cold and trembling, and I couldn't help crying all the time, and then my classmates found out that something was wrong with me, hugged me and comforted me, and the fuck actually said to pump me first, just smoke it, let me be less afraid for a while! Then a couple of boys who had a good time hugged me and grabbed me to draw blood, and I struggled desperately and cried in the hospital! I also bit the boy who was holding me!!

Tears and snot wiped his body, and he was really embarrassed to go home.

Sickness injury phobia has a strong familial component, with two-thirds of patients' immediate family members suffering from the same phobia. It is unclear whether this factor reflects genetic factors that influence the sharing of shared environmental experiences by the same family members. But the specific purpose that may develop from this unique form of physiological response is:

The onset mechanism of fainting and fainting is used to suppress future episodes or alertness. It has little to do with genetic factors.

The legendary blood sickness means that after seeing the blood, the whole person is weak and is about to fall.

When I was having supper, a table of people chatted about the experience and scene of my previous boyfriend's car accident, and I couldn't do it on the spot, I kept panicking, chills, dizziness, and rapid heartbeat, and I couldn't help vomiting, but I didn't faint.

Why do some people get sick with blood?