What is the cause of deafness in newborns?

Newborn deafness may be congenital or acquired. Congenital deafness refers to the loss of hearing of the baby at birth, while acquired deafness refers to deafness caused by acquired reasons after the baby is born. So what are the causes of deafness in newborns? Next, we will introduce the causes of deafness in newborns.

The factors that cause congenital deafness can be roughly divided into two categories: genetic factors and non-genetic factors. The genetic factors are mainly caused by mutations in nuclear genes and mitochondrial genes, so the inheritance of deafness also manifests itself in autosomal dominant, autosomal recessive, sex-linked and maternal inheritance modes. The patient's deafness can also manifest as non-syndromic deafness without abnormal symptoms of other organs or syndromic deafness accompanied by abnormal symptoms of other organs.

The non-genetic factors that cause congenital deafness are mainly various influences during pregnancy and influences on newborns during delivery.

Factors that may affect pregnancy include:

1. Infectious factors, such as rubella virus infection, toxoplasma infection, syphilis spirochete infection, herpes simplex virus infection, cytomegalovirus infection, etc.;

2. The use of drugs that affect the development of the fetal auditory system during pregnancy, such as hypoglycemic drugs and ototoxic drugs (dozens of them, including aminoglycoside antibiotics and antimalarial drugs). If these drugs are used in early pregnancy, they are more likely to cause abnormal development of the fetus;

3. If the pregnant woman suffers from a disease, such as hypothyroidism, the fetus may be born with congenital deafness;

4. The impact of environmental factors on pregnant women and fetuses, such as radiation damage.

Factors that may contribute to hearing loss during childbirth include:

1. Premature birth;

2. Head trauma;

3. Low birth weight baby.

4. Hypoxia or asphyxia of the fetus or newborn;

5. Neonatal hemolytic jaundice;

The article introduces the causes of deafness in newborns. Some improper behaviors of pregnant women during pregnancy may cause fetal malformations and may also cause deafness after the fetus is born. There are many possible causes of deafness in newborns, so it is recommended that pregnant women do not disobey the doctor's orders during pregnancy and avoid contact with drugs and chemicals.