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Doctor insights on: How Long Does A Fever Blister Last

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Think my son has HFM. Never had a fever. Already scabbed up. A few blisters still. Going on day 6. How long will it last?

Think my son has HFM. Never had a fever. Already scabbed up. A few blisters still. Going on day 6. How long will it last?

Self limited. : HFM usually last a week to 10 days. Treatment is symptomatic with acetaminophen or possibly age appropriate ibuprofen and keep child hydrated. Should not last much longer but other children in household may get it. ...Read more

Dr. Mark Diamond
2,227 doctors shared insights

Fever (Definition)

Fever is the temporary increase in the body's temperature in response to some disease or illness. A child has a fever when the temperature is at or above one of ...Read more


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How long can a oral medication for fever blisters leave and help inside your body?

How long can a oral medication for fever blisters leave and help inside your body?

Not sure: Fever blisters or hsv i viral outbreaks can be shortened by immediate use of zovirax, (acyclovir) but if not taken before 48 or so hours into it, it will be of little benefit. I do not know the specific body clearance for the drug, but as it is dosed every 4 hours, i imagine it is cleared rapidly. Medication most helpful if you feel an outbreak coming on, waiting only reduces effectiveness. Good luck! ...Read more

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What would you do to get rid of a fever blister faster how long will it take?

What would you do to get rid of a fever blister faster how long will it take?

Cut time in 1/2: Melissa officinalis or lemon balm (cream) has been shown in european studies to help expedite healing of cold sores. It can reduce healing time by half. Studies also show that regular use can help v recurrences. Brief supplementation with lysine 1, 000mg orally three times a day at the onset, can also hasten healing. Your physician can prescribe valtrex (valacyclovir). Can take up to a week. Can cut time in 1/2. ...Read more

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How long will my lip stay swollen because of my fever blister?

How long will my lip stay swollen because of my fever blister?

Herpes simplex: The inflammatory reaction of the body to this virus is highly variable and individualistic. It should generally have receded entirely within several days after resolution of the ulcerated area. Hope this helps and you are better soon. ...Read more

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How long will fever blister rash take to go away?

How long will fever blister rash take to go away?

Blister or Rash?: What do you mean by rash? If ur talking about cold sores on or around your lip it takes times. Cold sores are most often from herpes virus type 1. If ur able to start an anti-viral medication like Acyclovir or valcyclovir within the first 48 hrs (the sooner u take it the more effective) it can significantly decrease how bad gets. ...Read more

Dr. Philip Miller
1,671 doctors shared insights

Blistering (Definition)

Blistering is a bubble of skin filled with fluid. They can occur to excessive rubbing (as with a new pair of ...Read more