What causes olfactory failure?

1.decreased or lost olfactory function due to neuropathy of the nasal mucosa, olfactory bulb, and olfactory filament; Injuries to the central nervous system junctions are usually not accompanied by any noticeable loss of smell.

2.Due to the abnormality of the olfactory nerve in the embryonic stage, the sense of smell is lost.

3.Occasionally, temporal lobe lesions are accompanied by transient or paroxysmal olfactory hallucinations. Loss of smell is often accompanied by taste impairment, depending on the volatile substances in food and beverages.

4.The olfactory impairment caused by the epidemic is temporary.

5.Meningiomas, metastases, or infiltrative tumors of the anterior fovea artery or frontal lobe that can compress the olfactory bulb and olfactory tract, resulting in olfactory impairment.

6.In head trauma, the olfactory filament of the olfactory nerve through the cribriform plate may be torn or the olfactory bulb may be shredded (bruised).

It is recommended to do it as soon as possible, don't take it lightly, and slowly it may grow into a chronic problem, and it will be very difficult to get up. Because the current outlook for olfactory dysfunction in general is not very optimistic. Although patients have some self-healing, it is generally recommended that short-term acute olfactory loss be treated with hormones**, and drugs to nourish the nerves can also be used.

If you have nasal polyps or sinusitis and the smell is blocked, surgery is required. Therefore, the sense of smell should be examined in the hospital, and it should be clear and specific.

Nine factors that cause olfactory failure:

1. Household cleaning products. Excessive use of cleaning products can damage the sense of smell, toxic gases can damage the olfactory cells in the nose, and in severe cases, permanent loss of the sense of smell.

2. Antihypertensive drugs. Antihypertensive drugs can improve heart function, but they can damage the sense of smell.

3. Pregnancy. About 30% of pregnant women experience loss of smell in the second or third trimester of pregnancy. The main reason for this is higher estrogen levels, which leads to accelerated blood flow in the body to provide nutrients to the fetus, which causes the capillaries in the nose to swell, affecting the sense of smell.

4. Vitamin deficiency. Vitamin B12 is the most important for the formation of red blood cells, and once deficient, it can directly affect the sense of smell. Dairy, meat, and eggs all contain some amount of vitamin B12.

5. Periodontitis. Periodontitis bacteria can spread to the maxillary sinuses, causing inflammation, fever and loss of smell.

6. Diabetes. Complications of nerve damage caused by diabetes can cause not only pain and numbness in the hands, feet and legs, but also sensory nerves in the nose that control the sense of smell. The study found that the olfactory test scores of diabetic participants were significantly lower than those of healthy participants.

7. Traumatic brain injury. Traumatic brain injuries such as sports or car accidents can cause problems with the sense of smell. Most shocks cause tears in the sensitive nerve fibers that connect the brain to the nose, causing loss of smell. Although there is no cure, 39% of patients will slowly recover.

8. Nasal polyps. Sinusitis causes inflammation that can cause headaches, fever, and loss of smell.

9. Aging. Along with sight and hearing, loss of smell is one of the signs of aging. Studies from San Diego State University and the University of California in the United States show that 25% of people over the age of 60 and % of people aged 80 to 97 have olfactory problems.

Persistent loss of smell and taste in the absence of an obvious cause (such as a cold) is called a loss of smell. The most common cause of anosmia is allergic sinusitis. Nasal polyp.

Cold virus infection. Rhinitis virus infection. Head trauma.

Sulfur dioxide, nitride, and formaldehyde left in the interior after renovating the house can all be caused. Long-term perfume spraying can also cause.

Hyposmia is mainly associated with damage to the olfactory nerve. The common diseases that cause damage to the olfactory nerve are as follows:

1.Hyposmia is accompanied by nasal congestion and inflammation of the nasal mucosa on both sides, which may be caused by certain viral infections and chronic rhinitis.

2.Some elderly people with central nervous system diseases such as Alzheimer's disease may also have olfactory nerve atrophy, and then their sense of smell will be reduced. Some foreign studies have found that a simple olfactory test can help doctors determine whether a patient has Alzheimer's disease.

3.If you can't smell one or both sides, you may feel that you have a chronic headache or mental disorder, which may be due to a tumor at the base of the skull that compresses the olfactory nerve, which needs to be paid special attention.

4.Intracranial fractures, contusions, and hematomas can damage the olfactory nerve and can be diagnosed by X-rays and CT.

In addition, there are some cases of loss of smell that are not diseases but are caused by a lack of nutrients. For example, a lack of niacin, vitamin B12, iron, zinc, etc., can also cause sensory impairment and a decreased sense of smell.

Why is there a connection between perception and the length of life?

One possibility, the researchers say, is that the olfactory nerve that carries olfactory information from the nose to the brain has a problem with its health. If the nerves are not able to repair themselves, then the brain and body will suffer from the same condition.

Another possible explanation is that breathing into infectious, toxic, polluting substances can disrupt the sense of smell and cause heart, lung and brain diseases, which can then harm the brain and body, and predispose to early death.

British otolaryngologists Professor Nommer Kumar questioned the credibility of the olfactory test. The short-term inability to smell may be caused by a cold and nasal congestion, but there is no doubt that the long-term loss of smell and loss of smell is due to health problems.