Are boils contagious?
There is some controversy about boils being contagious. Some experts say the boils themselves are not contagious because they can occur from bacteria normally found on the skin. Others, however, say that boils are contagious because it is possible for person-to-person transfer of bacteria if a person's infected boils touch the skin of another person, who then may also develop boils.
What is the incubation period for boils?
Although the most common range of the incubation period for staphylococci is about four to 10 days, boils caused by these bacteria that are normally found on the skin are considered to have a variable incubation period.
How will I know if I have boils?
A boil begins when the skin turns red and tender in the area of the infection. After about four to seven days, the tender lump often starts to turn the skin whitish as pus collects under the skin. Some boils may spontaneously burst and leak out pus. Others may expand to form an abscess.
Treatment of Boils
The primary home remedy for most boils is heat application, usually with hot soaks or hot packs. It may be necessary to apply them 20 minutes at a time for three to four times daily. Heat application increases the circulation to the area and allows the body to better fight off the infection by bringing antibodies and white blood cells to the site of infection.
How do boils spread?
It is possible for boils to spread to another person if bacteria from the initially infected person contact the skin of another person who is susceptible to the infecting bacteria. However, a boil can spread in the skin of an infected individual to become an abscess or develop into a clump of boils (carbuncle). Severe infections can lead to fever, lymph node swelling, and more severe complications of infection, such as sepsis.
When will I know if I am cured of boils?
Boils can be cured once the pus drains out of the boil and the infecting bacteria are eliminated. When this occurs, the symptoms of skin redness, swelling, and pain resolve after a few days. Some smaller boils that are not deep in the skin may spontaneously drain while others may require a physician to incise the boil so that pus can drain out. Both topical antibiotics and occasionally oral antibiotics are given to eradicate infecting bacteria. Large boils may require gauze packing to help facilitate pus drainage. The gauze is usually removed in one or two days.
When should I contact the medical caregiver about boils?
Individuals should seek medical care for boils if they start running a fever, have severe pain at the site of the boil, the boil doesn't drain, if other boils begin to appear, or if a red streak extends from a boil. Individuals with heart murmurs, immune system depression, diabetes, or those who are taking medicines that alter the immune system should contact their physician urgently if they develop a boil.
Medically Reviewed on 7/18/2018
American Academy of Dermatology. "Dermatologists share tips to treat boils and styes." Mar. 8, 2016. <https://www.aad.org/media/news-releases/dermatologists-share-tips-to-treat-boils-and-styes>.
"Boils." DermNetNZ.org. Dec. 15, 2014. <http://www.dermnetnz.org/bacterial/boils.html>.