Why do people cry when they doze off, and why do people cry when they sleep?

Drowsiness is a normal physiological phenomenon, when people are tired, breathing gradually changes from deep and fast to shallow and slow, so that the oxygen content in the blood decreases, and the brain and other important organs are in a state of relative ischemia and hypoxia; The respiratory center in the brain, which is responsible for breathing, sends a signal to take a deep breath, which is manifested as a yawn, so that the amount of oxygen inhaled can be appropriately increased to relieve brain fatigue. ......Tears do not exactly indicate a change in mood. For example, when a foreign object such as dust falls into our eyes, a large number of tears are generated and the foreign body is washed out.

In addition to a large amount of water, there are lysozyme, immunoglobulin, complement system, lactoferrin, -lysin, etc., which have the effect of inhibiting the growth of bacteria and keeping the eyeball moist. ......These two autonomic-controlled self-regulatory functions of the body may be linked in some people. Therefore, it is normal to shed tears when yawning.

Generally, I want to sleep when I am angry, but some of them appear when I can't sleep, so I can only silently shed a few tired eyes.

If the patient has tears while sleeping, these patients may be tired or have not rested for a long time, causing the body to be tired, and the patient may have tears.

Some patients may have nasolacrimal duct obstruction, especially in infants and young children, if there are long-term tearing and discharge from the corners of the eyes, and they are prone to infection, these patients need to go to the hospital for medical medicine to contrast the nasolacrimal duct.

In order to observe whether the nasolacrimal duct is patency, therefore, if the patient simply has tears while sleeping, and the patient is also tired, these patients must pay more attention to rest.

It can be done with erythromycin eye drops** for a period of time, pay attention to eye hygiene, avoid infection, and be careful not to rub your eyes with your hands all the time. Lack of sleep and unreasonable use of eyes are related to eye fatigue and dry eye syndrome. It is recommended to adjust your mentality, pay attention to rest, use your eyes reasonably, control your mobile phone, hello, tears at every turn, according to the narrative, it is considered to be a symptom of tear duct obstruction. Lacrimal duct obstruction, punctuality, lacrimal tubule, lacrimal sac, nasolacrimal duct and other parts can occur, lacrimal duct irrigation is not smooth, irrigation fluid regurgitation, and even purulent discharge. Depending on the clinical presentation, the results of irrigation of the lacrimal duct can be accurately judged.

Suggestion: Use a lacrimal duct probe after applying antibiotic eye drops. Begin with a thinner probe and gradually use a coarse probe until the tear duct is clear.

Laser lacrimal duct dredging**. If it is still ineffective, you can do laser ** dredging, and leave the hose for 3 to 4 months after unobstruction. Patients with chronic dacryocystitis undergo lacrimocystonastomy.

Tearing at night when you go to bed is most commonly caused by poor tear ducts. Normally, the human eye will constantly secrete tears to moisten the eyes, and then these tears will enter the nasal cavity along the lacrimal nasal canal. When the tear duct becomes inflamed and blocked, tears can only overflow from the eye socket, which is the process of tearing.

It should be caused by allergic conjunctivitis, and it is recommended that you go to the hospital for an eye examination. Sodium cromolyn eye drops can be used in combination with oral anti-allergy medications such as Claritin and Montelukast sodium chewable tablets**.

The eyes secrete tears all the time, and these fluids usually flow through the tubules into the nasal cavity due to gravity and siphoning. (So usually when you cry, there will be a lot of snot, in fact, a lot of it is tears).

What causes tearing while sleeping?

There are two types of tearing: reflexive tearing and emotional tearing.

1.If there is tearing, it is considered that the tear duct is blocked or narrowed, you can go to the ophthalmologist for irrigation, if it can be flushed, it can be improved.

2.There is something in the heart, overthinking, and in the dream, there will be tears because of the content of the dream3Conjunctivitis is thought to be conjunctivitis, but there are other causes that should be confirmed by testing.

People also have feelings when they sleep, and your subconscious will reflect the experiences and encounters during the day when you sleep.

This is the saying "think by day, dream by night".

Have you been stressed or mentally burdened by work lately? "Everything will pass! "A pleasant body and mind is a cure for all diseases, and it is beautiful to open your eyes every day!

Why do people shed tears when they yawn?

When I'm sleepy, I always yawn. When you yawn, your eyes will always be full of tears, why do people shed tears when they yawn? Human tears are secreted all the time, flowing on the surface of the eyeball.

However, there is very little tears secreted and they flow along the surface of the eyeball and in the tiny spaces inside the eyelids, so you don't feel that the tears are flowing. However, in the blink of an eye, the tears on the surface of these eyeballs are sucked into the nasolacrimal duct, the sewer of the tears. Don't underestimate this not-so-long tube, it's the only way for tears to reach your nose.

The lacrimal glands constantly secrete tears, and the nasolacrimal ducts constantly excrete tears, so people usually do not shed tears. When a person yawns, his mouth is wide open, and he may exhale more than he can out of his body in order to exhale carbon dioxide and inhale oxygen. With the action of yawning, a stream of gas exhales forcefully from the mouth.

The muscles of the cheeks, tongue and throat tense and contract, and the pressure in the mouth and nose increases. As a result of the increased pressure in the nasal cavity, it will temporarily block the work of the nasolacrimal duct to excrete tears, and the "sewer" will not be passed, and the tears will not flow, and more and more tears will accumulate in the eyes. There will be tears in his eyes, and finally he will burst out of his eyes and flow to his face.

In fact, not only yawning can cause tears, but also when people laugh, sneeze, cough, and vomit, and the reason is the same.

Why do people shed tears when they yawn?