An infected blister is typically painful and can be dangerous if not promptly treated. A blister forms as the body’s response for protection against further damage. A bubble of fluid builds up to cushion the wound as well as allow the skin beneath to recuperate.
A viral, bacterial or fungal infection that starts in a blister can spread to other parts of the body. In some cases, it can even cause sepsis.
What are the signs?
It is oftentimes difficult to distinguish an infected blister. Most blisters are painful and tender. Nevertheless, there are some distinctive signs. Before assessing a blister, it is important to wash hands with soap and warm water to avoid the introduction of bacteria.
The usual signs include:
- Pain and swelling
- Warmth
- Foul odor
An individual might have an infected blister if there is bleeding if the site is touched or does not seem to heal. - Drainage of pus
- Holes or peeling skin
An individual might have an infected blister if there is bleeding if the site is touched or does not seem to heal.
Management of an infected blister
If an individual is suspected with an infected blister, a doctor must be seen right away. There are various factors that can trigger an infection, thus the doctor might perform a skin biopsy.
Once the root cause has been identified, the doctor might prescribe:
- Oral or topical antibiotics
- Oral or topical antifungal drugs
The blister might also require drainage which is carried out by the doctor.
Some measures that can be done at home before seeing the doctor include:
- Wound cleansing – run the site under warm water and carefully massage with soap. Continue to rinse and wash for 3-5 minutes. This must be repeated at least 2 times a day.
- Soaking the wound – immerse the wound in a saline solution prepared at home. Simply add a teaspoon of salt to a cup of warm water.
- Wound care – after washing both the wound and hands, apply a topical antibiotic ointment
- Pain relief – a non-steroidal anti-inflammatory drug (NSAID) can be given to lessen the swelling and pain
A blister is not usually an issue for concern. Most recuperate within 1-2 weeks. Although most blisters do not become infected, it might be a serious issue if there are signs of infection.
Disclaimer / More Information
The information posted on this page on an infected blister is for learning and educational purposes only. To learn to how to properly manage one, register for first aid training at one of our training centers located throughout Canada. The training centers are in Edmonton, Calgary, Vancouver, Kelowna, Saskatoon, Victoria, Surrey, Mississauga, Winnipeg, Red Deer, Toronto, Ottawa and Halifax.