Which diseases are not allowed to go abroad in the physical examination for studying abroad, and which have an impact on the choice of majors?

Physical examination items: 1, blood pressure for going abroad for physical examination, heartbeat for going abroad for physical examination-this is a routine item. My blood pressure is lower than normal, but I explained to the nurse that I didn't eat in the morning, which is why I did it, so the nurse helped me write it as normal. 2. Go abroad for a physical examination-the eyesight examination is very loose. They just want to see if you are blind: Hehe, I think so. Before, some netizens said that it was best to take off the contact lenses when checking your eyesight, so I specifically asked the doctor whether to take them off, and they said no. Besides, there is a man who wears glasses and never wears them. When checking his eyesight, the doctor actually asked him to wear it. It's really ft ... so, I think it's okay to have poor eyesight. They just want to see that you can still see things. 3. Go abroad for medical examination and urine test. Go abroad for physical examination and blood test-this project is to check whether you have AIDS and syphilis. I asked the doctor in detail and said that I only checked these two items, not even the liver function. In fact, even if you are a junior, it does not affect getting a visa; 5. Go abroad for physical examination and X-ray-that is, take a lung film. Remind female students with long hair not to tie their hair, they will let you curl your hair. This is who I am today. 6. Go abroad for physical examination-the doctor will ask you if you have been to the hospital when you were a child and if you have any scars. Actually, the question is whether you have had major surgery. They just ask, but they don't want to unbutton their clothes for inspection. Of course, I will also ask: Do you have epilepsy? Do you have a history of neurology? . . Of course not! Hehe ... and listen to the heartbeat. Did I see a netizen ask if premature heart beats would affect me before? I consulted the doctor and concluded that most people will have premature beats, so I'll see to what extent. So the problem is not big. But if there is a murmur in the heart, it is a bit troublesome, which means that there may be a heart disease. The whole examination process does not exceed 40 minutes, and the general results will come out at that time, and the blood test results will not come out until the afternoon, so if you are really in a hurry, you can call the clinic in the afternoon to ask about the situation. Generally speaking, if there is a problem, they will inform you first when they get the results. After the physical examination, if everything is normal, the embassy will issue a passport within 2 weeks 1 month (this is what the doctor in the clinic said, ..