O que fazer quando a catapora aparece no couro cabeludo?

When varicella—commonly known as chickenpox—manifests on the scalp, it can be particularly uncomfortable due to the sensitivity of the skin and hair follicles in that area. Scalp involvement is common in chickenpox, especially in children, and typically presents as pruritic (itchy), fluid-filled vesicles that may crust over within several days.

Management focuses on symptom relief and prevention of secondary bacterial infection. Patients should avoid scratching or picking at lesions; trimming fingernails short and wearing soft cotton gloves at night—especially for young children—can help minimize trauma. Over-the-counter colloidal oatmeal baths and calamine lotion may soothe itching, though calamine should be used cautiously on the scalp due to potential drying effects and difficulty rinsing.

Antipyretics such as acetaminophen are recommended for fever or discomfort; aspirin and nonsteroidal anti-inflammatory drugs (NSAIDs) should be avoided due to the increased risk of Reye syndrome and necrotizing soft tissue infections, respectively. In otherwise healthy individuals, antiviral therapy (e.g., oral acyclovir) is generally reserved for high-risk patients—including immunocompromised individuals, adolescents and adults, or those with underlying pulmonary or dermatologic conditions—or when initiated within 24 hours of rash onset.

Scalp lesions typically resolve without scarring if left undisturbed. However, signs of secondary infection—including increasing erythema, warmth, swelling, purulent discharge, or systemic symptoms like fever recurrence or lymphadenopathy—warrant prompt clinical evaluation and possible antibiotic treatment.

Prevention remains the most effective strategy: the varicella vaccine is highly effective and recommended as part of routine childhood immunization. For unvaccinated individuals exposed to active chickenpox, post-exposure prophylaxis with varicella zoster immune globulin (VariZIG) may be indicated for certain high-risk groups.