Mild Bacterial Pyodermas & Super-infections

Scabies

Intensely itchy skin infestation by the human scabies mite.

Primary risk age: All ages; in infants often involves palms, soles, and the scalp.

Urgency: Mild
Typical age: All ages; in infants often involves palms, soles, and the scalp.
Body system: Dermatological System

Typical course: Mites are killed quickly, but the itch can take 2–4 weeks to settle as the skin recovers.

Reviewed against AAP · CDC · WHO · NHS guidance Last reviewed 2026-06-13

1. Summary & Pathophysiology

Intensely itchy skin infestation by the human scabies mite.

Pathophysiology (Development Path)

Female mites burrow into the upper skin to lay eggs; an allergic reaction to the mites and their products causes the characteristic intense itch, which may take weeks to appear after a first infestation.

Primary Causes & Etiology

The mite Sarcoptes scabiei, spread by prolonged skin-to-skin contact and sometimes shared bedding or clothing.

2. Symptom Continuum

Early Onset Signs
Itching that is typically worse at night, with small red bumps.
Progressive Phase
Thread-like burrows and a rash in the finger webs, wrists, waistline, and (in babies) palms, soles, and scalp; other close contacts often itch too.
Severe Indicators
Widespread crusted scabies (in immunocompromised children) or secondary bacterial skin infection needs prompt medical care.

3. Clinical Verification

Clinical diagnosis from the rash pattern, burrows, and itchy contacts; skin scraping under the microscope can confirm it.

4. Care & Elements Plan

Primary Care Treatment Plan

Apply a clinician-recommended topical scabicide to the whole body as directed, and treat all close contacts and household members at the same time, even if they have no symptoms yet.

Home Support Elements

On treatment day, wash clothing, towels, and bedding in hot water and dry on high heat, or seal non-washable items in a bag for several days. Itch can persist for weeks after successful treatment.

Generic Active Ingredients (No Brands)

Permethrin cream (topical scabicide active ingredient, first-line in children)
oral ivermectin (prescribed by a clinician for selected or crusted cases)
emollients and clinician-advised soothing agents for residual itch.

Lists active elements only. Never administer self-designed therapies.

5. Doctor Critical Lines

Critical Thresholds: When to See a Doctor

See a doctor to confirm the diagnosis and for treatment, and return if itching persists beyond 2–4 weeks, the skin looks infected, or the rash worsens.

6. Vaccine & Prevention

Routine Prophylaxis (Prevention)

Treating all close contacts simultaneously and laundering bedding and clothing prevents reinfestation.

Immunization Context

No vaccine is relevant to scabies.

7. Timelines & Outlook

Active Timeline

Mites are killed quickly, but the itch can take 2–4 weeks to settle as the skin recovers.

Expected Prognosis

Excellent with correct treatment of the child and contacts.

Potential Untreated Complications

Secondary bacterial infection (impetigo) and, rarely, post-streptococcal kidney inflammation.

Mild

Impetigo Contagiosa

Superficial Bacterial Epidermal Infection

Preschool and school-aged children (2 to 5 years; highly contagious)

Moderate

Hand, Foot, and Mouth Disease (HFMD)

Enteroviral Mucocutaneous Vesicular Eruption

Infants and children under 5 years (Common in daycare and school settings)