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Doctor insights on: Cold Sores On Lower Back

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I have been getting blistery sores on my lower back, whenever i eat tomatoes, or citris foods. Is this herpes or cold sores?

I have been getting blistery sores on my lower back, whenever i eat tomatoes, or citris foods. Is this herpes or cold sores?

Could be herpes: I have heard of citrus type foods triggering a herpes outbreak. You can also get skin irritation from citric acid if it touches your skin and then you are out in the sun. However, it could all just be a coincidence and your rash could be many other things. There is medication for it if it is herpes, so may worth it to get checked. You can always take a pic of it and show it to your doc later. ...Read more

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Dr. Heidi Fowler
1,014 doctors shared insights

Cold Sore (Definition)

Also referred to as fever blisters, cold sores are small, painful fluid-filled blisters that are usually found around the lips. Cold sores are generally caused by the herpes simplex virus 1 which is related to herpes simplex virus 2 that causes genital herpes. Cold sores are very contagious and can be spread by mouth to mouth contact. They can spread to the genitalia and cause genital ...Read more


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I have a bubbly blistery rash on my lower back a bit like cold sores, very painful and itchy. What could this be?

I have a bubbly blistery rash on my lower back a bit like cold sores, very painful and itchy. What could this be?

Herpes simplex I: Cold sores, are contagious and usually occur outside the mouth, appearing as small red blisters on the lips, chin, cheeks, or in the nostrils. Also known as fever blisters, 95-percent of recurrent cold sore outbreaks are caused by type 1 herpes simplex virus, not the type 2 strain that can cause genital herpes. ...Read more

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Have cold sores and cut in vagina, spit there and now am in serious pain to the touch with tingling at times & lower back burns could I have spread it?

Have cold sores and cut in vagina, spit there and now am in serious pain to the touch with tingling at times & lower back burns could I have spread it?

Infections: Need work up immediately. Many causes such as herpes, h. Ducreyi, trichomonas, gonorrhea, etc. There are treatments and you must get them asap, especially with the back pain- signifies that infection is systemic. ...Read more

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Have cold sores. Cut on vagina, put my spit down there. Now its burns tingles and lower back too. Could I have spread to genitals, 3 months w/no sores?

Have cold sores. Cut on vagina, put my spit down there. Now its burns tingles and lower back too. Could I have spread to genitals, 3 months w/no sores?

Herpes concern: You could have herpes. It burns, tingles, hurts, and can occur in the mouth and on the skin. Type 2 happens mostly in the "boxer's shorts area, " which could include sacrum, genitals, or even thighs. A blood test will tell you type i or type ii (type ii is the worse kind). Treatment is the same: valtrex, (valacyclovir) famvir, or acyclovir. ...Read more

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What could my lower back pain and fever be from along with a cold sore on noes and on off itchy skin?

What could my lower back pain and fever be from along with a cold sore on noes and on off itchy skin?

Mono: Epstein-barr virus which causes mononucleousis, and has variable symptoms on the body. ...Read more

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Can getting a cold sore under noes cause lower back pain fever and other sick symptoms or is that only herpes 2?

Can getting a cold sore under noes cause lower back pain fever and other sick symptoms or is that only herpes 2?

No: Cold sore, or oral herpes, will not cause low back pain. Initial infection with herpes can cause fevers, but back pain and fevers are more likely to be due to something else. ...Read more

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Cold sores keep coming back recently. I haven't changed my diet or anything so what is the problem?

Cold sores keep coming back recently. I haven't changed my diet or anything so what is the problem?

Stress?: Stress in the form of emotional or physical stress can cause cold sores to recur. Sun exposure causes it in some people as well. You can take medication daily to suppress the herpes virus. See your doctor about this. ...Read more

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How can someone know if they are shedding if they only get cold sores not very.Often. And my test came back i had 1 and 2?

HSV : It is well known that persons can shed the hsv virus when there are no signs of infection. Therefore, there is no way of knowing when one is shedding the virus, which can be contagious to others. ...Read more

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How can I prevent them cold sores from coming back?

Tips: To prevent cold sores from occurring wash hands often. Maintain a healthful lifestyle (regular exercise, nutritious diet, adequate sleep, keeping stress at bay). Keep lips well moisturized & apply sun screen to the areas that your cold sores normally pop up. Talk with your physician about supplementing with lysine. ...Read more

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Sores along inside of lower lip, not cold sores, what are they?

Sores along inside of lower lip, not cold sores, what are they?

Need an exam : Without an exam, it is impossible to comment. Could be infection, inflammation, trauma, cancer, cysts, normal variations--just about anything. ...Read more