If not treated immediately, it has potential  spread to other parts of the body. Being highly contagious in nature it gets readily transmitted by sharing utensils, clothes, and toothbrush. Maintaining sexual contact, kissing and touching also leads to the spread of virus. It is likely to spread more when the virus is present with physical outbursts. It is less contagious if the virus is present without any outward physical signs.
Herpes simplex is a viral infection caused by the herpes simplex virus.[1] Infections are categorized based on the part of the body infected. Oral herpes involves the face or mouth. It may result in small blisters in groups often called cold sores or fever blisters or may just cause a sore throat.[2][5] Genital herpes, often simply known as herpes, may have minimal symptoms or form blisters that break open and result in small ulcers.[1] These typically heal over two to four weeks.[1] Tingling or shooting pains may occur before the blisters appear.[1] Herpes cycles between periods of active disease followed by periods without symptoms.[1] The first episode is often more severe and may be associated with fever, muscle pains, swollen lymph nodes and headaches.[1] Over time, episodes of active disease decrease in frequency and severity.[1] Other disorders caused by herpes simplex include: herpetic whitlow when it involves the fingers,[6] herpes of the eye,[7] herpes infection of the brain,[8] and neonatal herpes when it affects a newborn, among others.[9]
If you are pregnant and have genital herpes, it is very important for you to go to prenatal care visits. Tell your doctor if you have ever had symptoms of, or have been diagnosed with, genital herpes. Also tell your doctor if you have ever been exposed to genital herpes. There is some research that suggests that genital herpes infection may lead to miscarriage, or could make it more likely for you to deliver your baby too early.

Herpes virus type 3 is also known as varicella-zoster virus which causes chicken pox. This virus can also lead to a recurrent infection called herpes zoster or shingles. It occurs when the virus becomes reactivated after causing chicken pox and infects the skin. So if you have had chicken pox as a child, you may get shingles afterwards. Shingles and chicken pox cause blisters anywhere on the body. They are contagious and can be spread by direct contact with fluid from the blisters.
Research has gone into vaccines for both prevention and treatment of herpes infections. Unsuccessful clinical trials have been conducted for some glycoprotein subunit vaccines.[citation needed] As of 2017, the future pipeline includes several promising replication-incompetent vaccine proposals while two replication-competent (live-attenuated) HSV vaccine are undergoing human testing.[citation needed]
It should not be confused with conditions caused by other viruses in the herpesviridae family such as herpes zoster, which is caused by varicella zoster virus. The differential diagnosis includes hand, foot and mouth disease due to similar lesions on the skin. Lymphangioma circumscriptum and dermatitis herpetiformis may also have a similar appearance.

Worldwide rates of either HSV-1 or HSV-2 are between 60% and 95% in adults.[4] HSV-1 is usually acquired during childhood.[1] Rates of both increase as people age.[4] Rates of HSV-1 are between 70% and 80% in populations of low socioeconomic status and 40% to 60% in populations of improved socioeconomic status.[4] An estimated 536 million people worldwide (16% of the population) were infected with HSV-2 as of 2003 with greater rates among women and those in the developing world.[10] Most people with HSV-2 do not realize that they are infected.[1] The name is from Greek: ἕρπης herpēs which means "to creep", referring to spreading blisters.[11] The name does not refer to latency.[12]
Particularly when someone is on suppressive antiviral medication and practicing safer sex, risk of transmission can be greatly reduced. Cullins suggests female condoms (condoms that go inside the vagina and cover most of the vulva, though it's important to note that not all people with vaginas are female) to provide the most protection against transmission, though condoms that go over the penis will protect what they cover.
Herpes viruses typically infect the oral or genital mucosa. When herpes affects the mouth, it causes the typical "cold sores," which are painful sores or blisters that form on the lips, mouth, or gums. Prior to the development of the blisters, there may be a prodrome (early symptoms indicating onset of a particular disease) consisting of an itching, burning, or tingling sensation in the affected area. The virus remains dormant in the nervous system throughout life, and this is the reason that cold sores often recur in the same location.
The flares are caused when your immune system falters. This can be due to a number of reasons. Anything from daily stressors, lack of sleep, poor nutrition, weight gain, concurrent illnesses etc may cause your immune system to be distracted from the Herpes Simplex Virus (HSV) infection. The moment that happens, the virus will flare resulting in rashes, cold sores, ulcers or blisters on your body.
Genital herpes is contracted through sexual activity, and may show symptoms around the genital area (anus, buttocks, thigh, penis, vulva, etc.). Additionally, people with HIV can experience significantly worse symptoms of herpes.  See a doctor if your partner has herpes, or if you notice any unusual sores on your body.  How do you know if you have herpes?  Read more in our Diagnosing Herpes section here.  
You've probably heard of herpes and know it can come in two strains, genital or oral. But that's about as far as most people's knowledge of the STI goes. No shade, BTW. Our sex education in this country is so dire, it's not our fault. But, we do need to know much more about the symptoms, treatments, cures and tests for oral herpes because according to the World Health Organisation, 67 per cent of humans have the infection.

Herpes simplex viruses -- more commonly known as herpes -- are categorized into two types: herpes type 1 (HSV-1, or oral herpes) and herpes type 2 (HSV-2, or genital herpes). Most commonly, herpes type 1 causes sores around the mouth and lips (sometimes called fever blisters or cold sores). HSV-1 can cause genital herpes, but most cases of genital herpes are caused by herpes type 2. In HSV-2, the infected person may have sores around the genitals or rectum. Although HSV-2 sores may occur in other locations, these sores usually are found below the waist.

When a herpes outbreak occurs, you can expect cold sores to take about 10–14 days to heal on average. During this time period, the virus is considered to be active, and you should be very careful to avoid direct contact between a sore and someone else. If after trying the natural remedies for herpes described above you still experience frequent recurrences, talk to your doctor for how to get rid of herpes symptoms. Sometimes immunity is suppressed due to another infection or virus, or even as a side effect of taking some medications, so be sure to rule these causes out.

In order to diagnose herpes, a health care provider can swab an area of visibly active herpes infection or, if symptoms aren’t active, a blood test can be given that measures the number of herpes antibodies present in the body. The antibodies don’t indicate herpes itself, but rather show the immune system’s response to the presence of the virus in the body. It’s important to note that sometimes a swab can give false negative results since herpes lesions need to be large enough to yield enough detectable virus and if the outbreak is already healing it also may not be detected in a swab. (6)
A herpes infection is caused by the herpes simplex virus (HSV). It has 2 main types, including HSV-1 and HSV-2. While HSV-1 can cause oral herpes, HSV-2 can be responsible for genital herpes. Oral herpes is also known as cold sores or fever blisters. It mainly occurs on the lips, around the mouth. Genital herpes is usually referred to as herpes. It mostly affects the genitals and anal area. Genital herpes is considered to be a sexually transmitted disease. It’s extremely contagious and can be spread through sexual intercourse.
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