Causes of Bells Palsy in Adults
The causes of Bell’s palsy by nerves that control muscles or facial nerves that are inflamed or crushed. From the brain, the facial nerve passes through a narrow gap near the upper jaw. When the facial nerve is squeezed or inflamed, the signal that the brain sends to the facial muscles will be disrupted. This disorder that inhibits the supply of blood and oxygen to the nerve cells, resulting in weakness or paralysis of the face.
The cause of this nerve irritation is still not known clearly, but the herpes virus is thought to be the main cause of this problem. There are two types of herpes virus that are suspected to cause nerve irritation in face, namely:
- Herpes simplex virus (HSV). There are two types of herpes simplex virus that are thought to irritate facial nerves, namely HSV type 1 which causes cold afternoon (blistering in the lips area) and HSV type 2, which is the cause of genital herpes.
- Varicella zoster virus. This type of virus causes chicken pox and smallpox. This virus is less likely to cause Bell’s palsy, but it can lead to more serious conditions, namely Ramsay-Hunt syndrome
In addition to herpes virus, several other viral infection conditions are also suspected of being able to cause Bell’s Palsy, including:
- Lyme disease. Infections caused by bacteria spread by lice.
- Syphilis. This disease is caused by Treponema pallidum virus.
- Epstein-Barr virus. This type of virus causes glandular fever.
- Cytomegalovirus. This virus belongs to the herpes virus group. This virus can cause symptoms similar to flu, glandular fever, sore throat, and swollen glands.
HIV and diabetes are also likely to cause Bell’s palsy, although until now the reason is not known with certainty. Upper respiratory tract infection can also be a factor that increases the risk of experiencing Bell’s palsy.
In women who are pregnant and entering the third semester also have a higher risk of experiencing Bell’s palsy. This disease can occur in the first week of women who have just given birth. In addition, heredity is also influential in increasing the risk of experiencing Bell’s palsy. In other words, someone is more at risk of experiencing Bell’s palsy if there are any family members with the condition.