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skin abscess

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Skin Abscess

Alternative Names
abscess, furuncle, carbuncle, boil

Definition
An abscess is a collection of pus in the soft tissue of the skin usually caused by a bacterial infection.

What is going on in the body?
When an abscess occurs, it is usually because of a bacterial infection caused by Staphylococcus aureus organisms. However, abscesses can also be a response to a foreign body, a ruptured cyst under the skin or other processes under the skin.

What are the signs and symptoms of the condition?
Abscesses usually cause tender, red, swollen skin with an overlying pus head. They can also appear as a very tender, soft lump in which the pus may not be visible.

What are the causes and risks of the condition?
People whose immune systems are suppressed, or have reduced activity, for any reason are more likely to develop abscesses. Abscesses may also occur in healthy individuals.

How is the condition diagnosed?
An abscess is diagnosed clinically by a doctor.

What are the long-term effects of the condition?
Scarring and recurring lesions may appear. Deep skin abscesses can spread within the bloodstream or move into underlying bones.

What are the risks to others?
If the abscesses are caused by bacteria, this can be spread to others by skin-to-skin contact.

What are the treatments for the condition?
It is necessary to drain the abscess of pus and foreign bodies by making a cut in the lining. Antibiotics are then given to treat the bacterial infection.

What are the side effects of the treatments?
Possible side effects are those that are commonly associated with antibiotics. These include nausea, diarrhoea and allergic reactions.

What happens after treatment for the condition?
The lesion should completely vanish after drainage and drug treatment. Scars and recurrences are possible.

Author: Lynn West, MD
Reviewer: HealthAnswers Australia Medical Review Panel
Editor: Dr David Taylor, Chief Medical Officer HealthAnswers Australia
Last Updated: 1/10/2001
Contributors
Potential conflict of interest information for reviewers available on request


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