MedicineNet.com
About Us | Privacy Policy | Site Map
March 21, 2010
MedicineNet home Picture Slideshows Diseases and conditions Symptoms and signs Procedures and tests Medications Picture Image Collection MedTerms medical dictionary Pet Health
Font Size
A
A
A


Impetigo (Impetigo Contagiosa)

Medical Author: Alan Rockoff, MD
Medical Editor: William C. Shiel Jr., MD, FACP, FACR

Viewer Comments

Featured patient discussions on impetigo

"I have been suffering from bullous impetigo for the last six months on my face, neck and back. It was misdiagnosed by three different physicians as acne and/or dermatitis. Finally got the correct diagnosis three weeks ago and have been treating with Bactroban and Bactrim, plus a "bleach bath." Never heard of "bleach bath" before, but it entails adding 1/8 cup of Clorox bleach and soaking for 10 minutes once a day to sterilize the skin. Antibiotics were helping but the bleach bath is the treatment that did the trick."


Top Searched Impetigo Terms:

treatment, ringworm, scabies, shingles, Staph, eczema, poison ivy
Patient Discussions are not a substitute for professional medical advice, or treatment.
See the disclaimer at the bottom of the comments page.
Doctor to Patient

What is impetigo? What causes it?

Impetigo (pronounced im-puh-TIE-go) is an infection of the surface of the skin, caused by staphylococcus ("staph") and streptococcus ("strep") bacteria. Impetigo is more common in children than in adults.

What are the types and symptoms of impetigo? What does impetigo look like?

The two kinds of impetigo are:

  • Non-bullous impetigo: This is the common form, caused by both staph and strep bacteria. It appears as small blisters or scabs, which then form yellow or honey-colored crusts. These often start around the nose and on the face, but they also may affect the arms and legs. At times, there may be swollen glands nearby.


  • Bullous impetigo: This form is caused by staph bacteria that produce a toxin that causes a break between the top layer (epidermis) and the lower levels of skin forming a blister. (The medical term for blister is bulla.) Blisters can appear in various skin areas, especially the buttocks, though these blisters are fragile and often break and leave red, raw skin with a ragged edge. No prior trauma is needed for these blisters to appear.

Is impetigo contagious?

Impetigo is contagious, mostly from direct contact with someone who has it, but sometimes from towels, toys, clothing or household items. Once it starts, impetigo often spreads to other parts of the body. This is particularly common with impetigo in children. There may be mini epidemics in daycare centers. Bacteria that cause impetigo may enter through a break in the skin, such as that which comes from cuts and scrapes. At times, however, impetigo appears even if no one nearby has it and the skin seems unbroken. Adults often catch impetigo from close contact with infected children. Heat, humidity, and the presence of eczema predispose a person to developing impetigo. Sometimes bacteria live in the nose and spread from there to other parts of the skin.

How is impetigo diagnosed?

Diagnosing impetigo is mostly straightforward, though occasionally other conditions may look something like it, such as tinea (fungus, "ringworm") or scabies (mites). It is important to note that not every blister or ooze means infection. At times, other infected and noninfected skin diseases produce blister-like skin inflammation. Such conditions include herpes cold sores, chickenpox, poison ivy, other skin allergies, eczema, and insect bites. Secondary infection of these diseases does occur sometimes, but often blistering comes from the original condition and does not mean that actual impetigo has developed. Medical judgment -- helped by culture tests, when necessary -- is needed to decide whether antibacterial creams or pills should be used in addition to the remedies suitable for the original condition.



Next: What is the treatment for impetigo? »

Share | | | | | More

Impetigo - Length Symptoms Lasted

The MedicineNet physician editors ask:

How long did the symptoms of your impetigo last? Was there anything in particular that helped with pain/symptom relief?

Comment submissions for this question have ended. Patient Discussions FAQs
See 27 Viewer Comments

View Comments


Suggested Reading by Our Doctors
MedicineNet Doctors
  • cephalexin, Keflex, Keftabs - Clarifies the medication cephalexin (Keflex, Keftabs) a drug used to treat infections caused by bacteria that are susceptible to the effects of cephalexin. Article includes descriptions, uses, drug interactions, and side effects.
  • Rash - Learn about rash causes, symptoms, diagnosis and treatment. Common skin rashes include poison ivy, hives, shingles, eczema, contact dermatitis, ringworm, psoriasis and impetigo.
  • azithromycin, Zithromax, Zmax - Establishes the medication azithromycin (Zithromax), a drug that is effective against susceptible bacteria causing infections, and certain sexually transmitted infectious diseases.

Latest Medical News

Women's Health

Find out what women really need.


Are you Depressed? Take the Quiz

Your Guide to Symptoms & Signs: Pinpoint Your Pain



Impetigo

What is Staphylococcus?

Staphylococcus is a group of bacteria that can cause a multitude of diseases as a result of infection of various tissues of the body. Staphylococcus is more familiarly known as Staph (pronounced "staff"). Staph-related illness can range from mild and requiring no treatment to severe and potentially fatal.

The name "Staphylococcus" comes from the Greek staphyle, meaning a bunch of grapes, and kokkos, meaning berry, and that is what Staph look like under the microscope, like a bunch of grapes or little round berries. (In technical terms, these are gram-positive, facultative anaerobic, usually unencapsulated cocci.)

Over 30 different types of Staphylococci can infect humans, but most infections are caused by Staphylococcus aureus. Staphylococci can be found normally in the nose and on the skin (and less commonly in other locations) of 20%-30% of healthy adults. In the majority of cas...

Read the Staph Infection (Staphylococcus Aureus) article »











Health categories:

Slideshows | Diseases & Conditions | Symptoms & Signs | Procedures & Tests | Medications | Image Collection | Medical Dictionary | Pet Health

Popular health centers:

Allergies | Arthritis | Blood Pressure | Cancer | Chronic Pain | Cold & Flu | Diabetes | Digestion | Eyesight | Health & Living | Healthy Kids

Hearing & Ear | Heart | Infectious Disease | Men's Health | Mental Health | News & Views | Pregnancy | Sexual Health | Skin | Women's Health | More...

MedicineNet.com:

About Us | Newsletters | RSS Feeds | Privacy Policy | Site Map | WebMD® | Medscape® | eMedicine® | eMedicineHealth® | RxList®

This website is certified by Health On the Net Foundation. Click to verify. This site complies to the HONcode standard for trustworthy health information:
verify here.

©1996-2010 MedicineNet, Inc. All rights reserved. Notices and Legal Disclaimer.
MedicineNet does not provide medical advice, diagnosis or treatment. See additional information.