How is Impetigo Diagnosed?
Impetigo is usually diagnosed based on its characteristic appearance, including honey-coloured crusts, blisters or sores. Laboratory tests are not routinely required. If the infection is recurrent, widespread, fails to improve with treatment or methicillin-resistant Staphylococcus aureus (MRSA) is suspected, the doctor may collect a swab from the affected skin for bacterial culture and antibiotic susceptibility testing. Additional tests are rarely needed unless a deeper infection or another skin condition is suspected.
How is Impetigo Treated Based on Severity?
Treatment depends on how widespread impetigo is. The table below summarises the treatment approach based on the severity of impetigo:
| Severity | Treatment Approach |
| Mild / Localised | Topical antibiotics and good hygiene measures |
| Moderate | Oral antibiotics may be prescribed if lesions are numerous, widespread or topical treatment is impractical |
| Severe / Widespread | Oral antibiotics and treatment of associated complications; hospital admission is rarely required |
Types of Impetigo and Their Treatment
Impetigo has three main forms, and its treatment varies for each type. Types of impetigo, as per their treatment, are mentioned in the table below:
| Type | Treatment |
| Non-Bullous Impetigo | Topical antibiotics; oral antibiotics if widespread. |
| Bullous Impetigo | Oral antibiotics are usually needed. |
| Ecthyma | Oral antibiotics as it is a deeper infection. |
Topical Treatments for Impetigo
Topical antibiotics form the first line of therapy for mild impetigo. The creams are directly applied gently to the lesions. Topical treatments for impetigo can include the following medications:
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Mupirocin First-line topical antibiotic for most localised impetigo.
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Ozenoxacin A newer topical antibiotic that is effective against methicillin-susceptible and many methicillin-resistant Staphylococcus aureus.
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Fusidic Acid May still be used in selected patients according to local bacterial susceptibility and prescribing practices, but increasing resistance limits routine empirical use.
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Crust Removal Gently soften and remove crusts in warm water before applying topical antibiotics.
Other Treatments for Impetigo
In addition to antibiotic treatment for impetigo, proper skin care and treatment measures aid the healing process. These measures can include:
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Gentle Cleansing Wash the affected skin gently with soap and water to remove dirt, reduce bacteria and promote healing.
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Crust Removal Soak the affected area with warm water to soften the crusts, and gently remove them before applying topical antibiotics to improve medicine penetration.
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Wound Covering Cover the wounds with a clean, loose dressing if possible to reduce scratching and prevent transmission to others.
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Treatment of Underlying Skin Conditions Manage conditions, such as eczema, scabies or insect bites, which can damage the skin and increase the risk of recurrent impetigo.
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Nasal Decolonisation Mupirocin nasal ointment may be recommended for selected patients with recurrent impetigo or recurrent Staphylococcus aureus infections under medical supervision.
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Management of Complications Although uncommon, complications, such as ecthyma, cellulitis or other deeper skin infections, require prompt medical evaluation and appropriate treatment.
Oral Medications for Impetigo
Oral antibiotics are indicated for generalised or bullous impetigo. They are also indicated where the use of cream is less effective. Oral medications commonly used for impetigo treatment are:
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Cephalexin: First-line oral antibiotic for extensive impetigo caused by methicillin-susceptible bacteria.
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Amoxicillin-Clavulanate: This medicine may be prescribed when broader antibacterial coverage is required.
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Flucloxacillin: It is the preferred anti-staphylococcal penicillin where available.
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Clindamycin: Alternative for penicillin allergy or suspected resistant infection.
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Doxycycline: May be used in adults and children over eight years when MRSA is suspected or confirmed.
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Co-trimoxazole: May be used for MRSA when supported by bacterial culture and susceptibility testing.
Ayurvedic and Alternative Treatments for Impetigo
Ayurvedic and alternative treatments can be used alongside prescribed medication to support the healing of impetigo. These treatments can include:
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Neem: Neem paste can be used due to its anti-bacterial and anti-inflammatory properties.
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Turmeric: It is considered effective in wound healing and anti-inflammatory activities.
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Aloe Vera: It may help soothe irritated skin.
Note: These treatments must always be used after seeking advice from your doctor.
Home Care for Managing Impetigo
Home care measures for impetigo help it heal more quickly and prevent its spread. These include:
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Clean the lesions using clean soap and water.
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Shorten your nails to prevent spreading the infection.
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Put a loose bandage over the affected area.
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Clean hands after coming into contact with the lesions.
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Avoid sharing towels, clothing, and bedding.
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Finish taking the whole course of antibiotics.
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If advised by a doctor, stay at home to avoid spreading.
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Wash clothes, towels and bed linen separately.
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Children should return to school only after 24 hours of antibiotic treatment if lesions are covered and improving.
How Long Does Impetigo Treatment Take?
Impetigo usually heals quickly with appropriate treatment. The table shows the approximate duration of impetigo treatments:
| Stage | Approximate Duration |
| Topical Antibiotics | Applied for 5 to 7 days. |
| Oral Antibiotics | A course of 5 to 7 days. |
| Contagious Period | Until 24 to 48 hours after starting antibiotics. |
| Healing | Sores clear within a few days to two weeks. |
| Without Treatment | Often clears in two to four weeks, but treatment is recommended to shorten illness, reduce transmission and lower the risk of complications. |
Impetigo Treatment Side Effects
Most impetigo treatments are usually safe. However, some might lead to side effects including:
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Skin irritation
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Burning or stinging
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Allergic reaction
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Nausea
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Abdominal discomfort
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Photosensitivity
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Clostridioides difficile infection (rare)
Lifestyle Changes for Managing Impetigo
Prevention lowers the risk of impetigo and its spread. Simple lifestyle habits given below help greatly:
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Wash your hands regularly with soap and water, especially after touching the affected skin.
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Clean the sores gently every day and apply prescribed medicines exactly as directed.
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Avoid scratching or picking at the sores to prevent the infection from spreading or causing scarring.
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Keep the affected area clean, dry, and, if advised, covered with a clean dressing.
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Do not share towels, clothing, bedding, razors or other personal items until the infection has completely healed.
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Wash clothing, towels and bed linen used by the infected person separately in hot water whenever possible.
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Treat underlying skin conditions, such as eczema or scabies, to reduce the risk of recurrent impetigo.
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Complete the full course of prescribed antibiotics, even if the sores begin to heal earlier.
Triggers That Can Worsen Impetigo Symptoms
There are several reasons why impetigo can spread or become severe. Controlling them can be helpful for a quicker healing process. Some key triggers to avoid actively include:
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Scratching or picking at the sores.
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Delaying or stopping antibiotic treatment too early.
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Poor hand hygiene or frequent touching of the affected skin.
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Warm, humid weather that promotes bacterial growth.
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Close contact with an infected person.
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Untreated skin conditions such as eczema, scabies or insect bites.
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Cuts, abrasions or other breaks in the skin.
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Sharing towels, clothing, bedding or personal items with others.
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Weakened immunity due to certain medical conditions or medicines.
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Participation in close-contact sports before the infection has healed.
Impetigo Treatment Cost in India
The treatment cost of impetigo in India is extremely low. The cost of a 5g pack of mupirocin ointment, which is an antibiotic, ranges between ₹100 and ₹300. Additional expenses may include dermatologist visits, which can be between ₹1,000 and ₹2,500. Oral antibiotics in extensive cases are affordable too. Treatment for impetigo is usually done at a low cost in an outpatient department (OPD). The cost is a little higher in private clinics in big cities. However, government hospitals provide low-cost or free services.
Does Health Insurance Cover Impetigo Treatment in India?
Yes, several health insurance plans cover treatment for impetigo, which is a minor skin disease. It is usually treated at the OPD level and involves doctor consultations and medicines. Such expenses are covered under insurance only if the policy comes with an OPD cover. Any rare complication leading to hospitalisation will also be covered. However, policy coverage will depend on the plan, and so reading policy terms carefully is recommended.
Frequently Asked Questions (FAQs)
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Q1. Is impetigo curable?
Ans: Yes, impetigo is curable with antibiotics. It normally clears within one or two weeks. -
Q2. What is the best treatment for impetigo?
Ans: For mild cases of impetigo, antibiotic ointments such as mupirocin are used. Oral antibiotics are needed for severe cases of impetigo. -
Q3. For how long does impetigo remain contagious?
Ans: Impetigo normally becomes non-contagious 24 to 48 hours after taking the first dose of antibiotics.
