Why do you want to vomit and retch when you see blood?

Sickness, also known as "blood phobia", is a mental disorder in a special situation, which is the same phobia as the "object terror" of fear of seeing snakes and caterpillars, as well as the "communicative terror" of fear of seeing strangers and the opposite sex, and is not necessarily related to timidity. Motion sickness is also different from motion sickness, the former is similar to fear of heights and is a psychological problem; The latter is a physiological problem of the balance organ of the inner ear. Although the cause of motion sickness has not yet been clarified, this mental disorder is certainly not the type of psychosis commonly known as "neuropathy".

Except that they can't see blood, people who faint blood are no different from ordinary people. Those who suffer from fainting will feel terrible and nauseous when they see blood; In severe cases, they will lose consciousness. These problems may affect the patient's work and life.

However, motion sickness is not an incurable disease, and if the disease is "desensitized"** (blood is seen repeatedly and gradually from weak to strong under the guidance of a psychologist), it can be **. Fainting refers to the phenomenon of fainting caused by the sight of blood, 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 line, fed warm water or sugar water, rested for 10 to 15 minutes, and generally recovered, and if necessary, should be given medication to resuscitate**.

Hematemesis is acute upper gastrointestinal bleeding caused by diseases of the upper gastrointestinal tract (referring to diseases of the digestive organs above the ligament of the flex, including esophagus, stomach, duodenum, liver, gallbladder, and pancreas) or systemic diseases, in which blood is vomited through the mouth. Hemoptysis caused by bleeding from the nasal cavity, oral cavity, throat, etc., or respiratory tract disease, is not hematemesis and should be carefully distinguished.

Hematemesis mainly includes esophageal diseases, gastric and duodenal diseases, liver and biliary diseases, pancreatic diseases, blood diseases, acute infectious diseases, and others such as uremia, respiratory failure, liver failure, etc. There are many causes of hematemesis, but peptic ulcer is the most common, followed by esophageal or gastric varices rupture, and then acute gastric mucosal lesions. When ** is not known, some rare diseases should also be considered, such as upper gastrointestinal tumors, vascular malformations, hemophilia, primary thrombocytopenic purpura, etc.

Epigastric discomfort and nausea are often preceded by vomiting of bloody gastric contents. Its color varies depending on the amount of bleeding, how long it stays in the stomach, and the location of the bleeding. Heavy bleeding, short stay in the stomach, bleeding in the esophagus, bright red or mixed with clots, or dark red; When the amount of bleeding is small or the stomach stays for a long time, acidified orthohemoglobin is formed due to the interaction of hemoglobin with gastric acid, and the vomit may be brown like coffee grounds.

It is recommended that you go to the hospital for a formal examination, because the physical examination and understanding of the accompanying symptoms are very helpful, the above is only a summary of the possible symptoms of hematemesis and clinical manifestations, first of all, you should determine whether you vomit blood, you should pay attention to ruling out nasopharyngeal bleeding and hemoptysis, but also to understand whether there is a cause of hematemesis (if there is a history of poor diet, heavy alcohol consumption or special drug intake) and past medical history (whether there is a history of epigastric pain, acid reflux, hiccups, dyspepsia in the past, whether there is liver disease and long-term drug intake, etc.), If you are not a doctor yourself, the description may not be as accurate and comprehensive, so the above explanation of hematemesis is for reference only.