- 1 What is Impetigo?
- 2 What are the causes? And the transmission, how does it happen?
- 3 Risk factors
- 4 Types and symptoms of Impetigo
- 5 Diagnosis
- 6 Treatment of Impetigo
- 7 Complications
- 8 How to prevent Impetigo
What is Impetigo?
Impetigo is a bacterial, infectious and contagious skin disease. It usually develops in children, being one of the most common childhood dermatoses, but adults can also develop it. The disease is characterized by reddish wounds that have a yellowish fluid. When the wounds burst, a yellow / brown crust forms around the lesion.
According to the World Health Organization (WHO), impetigo is more common in developing countries, usually due to the lack of hygiene in them. According to the Canadian Public Health Agency, more than 100 million people are diagnosed with the disease annually.
Our skin is inhabited by several microorganisms, including those that cause impetigo. In the case of this disease, two bacteria are the cause: Streptococcus pyogenes and Staphylococcus aureus .
For the disease to develop, it is necessary for these bacteria to enter our skin and this happens through a small wound, cut or even a mosquito bite. The bacterium’s incubation time is 1 to 10 days and they are transmitted as follows:
- Streptococcus pyogenes : through direct contact with the lesions.
- Staphylococcus aureus: through contact with lesions and contaminated objects.
As much as anyone can develop the disease, it must be emphasized that some risk factors contribute to this happening. Check out what they are:
- Age: impetigo happens mainly in children from 2 to 5 years old.
- Overcrowding: the disease spreads more easily in places that have a large number of children (eg schools and daycare centers).
- Humid weather: infections like Impetigo are more common to occur in the summer.
- Contact sports: participation in contact sports, such as football, increases the risk of transmission of Impetigo.
- Injured skin: bacteria that cause impetigo enter your skin through small lesions.
- Compromised immune system: elderly people or people with diabetes , for example, are more likely to develop the disease.
There are 3 cataloged types of impetigo and, below, you will know what they are and what symptoms each one presents.
Common Impetigo or Non-bullous Impetigo
This type of disease is the most recurrent. It usually starts with small reddish lesions, much like mosquito bites, which evolve quickly to larger lesions with pus and, when burst, form golden-colored crusts.
Lesions of the common impetigo usually appear on the face and / or skull, but they can also occur on the individual’s arms and legs. They do not usually hurt, however they cause a lot of itching in the person. Recalling that the act of scratching these lesions can favor the transmission of the disease through contaminated hands.