Impetigo (School Sores)

Also known as school sores, impetigo is a highly contagious skin infection caused by either Staphylococcus or Streptococcus bacteria. It is most often seen in children, hence the name school sores, however it can occur in adults too.

The bacteria thrive in warm & humid weather & are more common in the summer months & crowded conditions (such as daycare centres).

It can occur on any part of the skin, although it is most commonly seen around the nose & mouth. Transmission occurs via direct contact with the lesions or nasal discharge of an infected person. The bacteria enter the skin via a small cut or abrasion such as an insect bite, eczema etc. People with a low resistance such as diabetics & cancer patients are also at greater risk of infection.

Transmission may also via shared objects (fomites), such as towels, clothing etc. Again, the bacteria enter the skin via a small cut or abrasion.

It usually takes 1-3 days after exposure for symptoms to appear. Infection can quickly spread to other parts of the body.

Can an infected person go to work or school if they have impetigo:

Treatment should have been treated before returning to work or school. The affected area should be covered with a waterproof dressing.

Impetigo symptoms:

• Itching & reddening of the skin.
• Small, fluid filled blisters.
• The blisters burst, leaving an open, raw, reddish looking lesion. There may be pus or a clear, liquid discharge.
• As the skin dries, a yellowish crust forms.
• Swollen lymph nodes close to the infected area may also occur.  

Impetigo treatment:

If you suspect you or your child is infected with impetigo, you should see your GP. It is highly contagious & requires medical treatment. This may include;

• In mild cases, washing the area with soap & water, patting dry & then application of an antibacterial cream ointment to the lesions.

•  More severe or widespread cases may require oral antibiotics.

How to prevent the spread of impetigo:

• Good hygiene, which includes frequent washing (both of the hands & also daily baths or showers).

• Don't share personal items such as towels etc.

• Impetigo is still infectious while the lesion is weeping. Infected children should stay home from school until lesions have dried & crusted. When they do return, the lesions should be covered with a watertight dressing.

• Keep children’s nails short.

• Don’t scratch at the lesions.