The infection caused by the herpes virus is usually mild and often heal without treatment. But they tend to cause serious complications in rare cases mainly in immunocompromised patients especially the ones undergoing chemotherapy or the HIV positive patients or the ones having any other immunodeficiency diseases.

The likely complications of the cold sore virus are mentioned under to name a few:

Loss of body fluid (Dehydration)

The infection of the cold sore virus leads to severe pain which is an important and most likely reason for the lack of water in the body also called as the dehydration. Fever blisters or the infection of the herpes virus can be very painful and the patient might avoid the intake of even fluids even though the need is to drink plenty of water. The small children are mostly at risk of becoming dehydrated. So try to drink a lot of water or fluids even in cold sores.

Pus filled infection on toe or finger also called the herpetic whitlow

The cold sore virus can easily spread to the other parts of the body. The process is called as the secondary infection. The painful blisters and sores formed on the finger of a person is a form of secondary infection of the cold sore virus. The cut or abrasion on the hand when exposed to the herpes virus even accidently enters the skin of the hand causing the herpetic whitlow. The secondary infection on the finger cases are very common with dental practitioners who encounter cold sore patients quite often in their regular dental practice and they might accidently injure their finger during the dental procedure of the cold sore patient leading to infection.

Inflammation of cornea or conjunctiva of eye (Herpetic Keratitis)

Herpetic keratitis which affects the eyes of a patient is another form of secondary infection of the cold sore virus. The contact of the virus with the eyes even accidently causes an inflammatory reaction and blisters to occur on the eyelids. The treatment can however be easily don with the use of anti-viral drugs commonly available from an eye specialist.

If left untreated, herpetic keratoconjunctivitis can cause infection of the transparent layer of the eye called the cornea and eventually lead to blindness. To avoid touching eyes in active infectious cold sore stage is very important. Even in case you need to touch your eyes like in case of removal of your contact lenses the hands should be thoroughly washed. Fever blisters on the cornea are a really dangerous with each recurrent infection. Contaminated fingers or towels are the most common source of infection to the eye. The wound can be sterilized with alcohol or cotton role or even a cotton swab. The application of a commonly used cold sore treatment modality is also considered wise.

Each year, there are cases reported of patients who spread the infection to their own eyes. The result can be permanent damage to the eye. So from the above mention we understand that the fever blisters can cause permanent and complete damage to the cornea of the eye.

Brain inflammation (Encephalitis)

The encephalitis is a form of serious infection of the brain caused by the herpes virus in severe cases but very rarely in which the brain becomes edematous, possibly causing brain damage and even death. Injecting antiviral drugs such as acyclovir into the veins can be helpful in treating encephalitis.

Dangerous for the Unborn Child

When the herpes is in an active form of cold sore stage the herpes virus can also be present in the body fluids like the saliva and also the vaginal fluids of a woman. This is the reason an intelligent doctor will not recommend to deliver the baby vaginally during the active stage of the fever blisters due to which the newborn can get infection of the herpes virus to the eyes during delivery if not taken care, which could cause damage or blindness

Body cells are destroyed

Herpes infection causes the cells of the body to create new herpes virus cell. The sores result when the virus enters the cells and gives instructions to them to make new cells and then destroying the host cell to release them free which releases the newly formed progenies out of the cell. The open cold sore seen is a result of explosion of millions of close by lying body cells. The herpes virus can form cold sores and destroy the body cells anywhere it comes in contact with the surface of the body it can easily invade through a cut skin or soft tissue injury and establish itself there ultimately leading to re-current infections in the area then again and again. So it’s dangerously infective.

Herpes virus infection therefore can be very dangerous and especially in the contagious stages like cold sore which can cause the infection to spread from one part to other part of the body and from person to other person.

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