Derm: Impetigo: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Impetigo🎧 A clear, high-yield breakdown of this contagious bacterial skin infection in kids – perfect for exam prep and real-life diagnosis.🧠 Key Learning Points📌 DefinitionImpetigo is a highly contagious superficial bacterial skin infection, most common in young children, causing honey-coloured crusted lesions, especially on the face.📌 Causes & Risk Factors• Staphylococcus aureus (most common)• Streptococcus pyogenes• Minor skin injuries: cuts, insect bites, eczema• Warm, humid climates• Crowded settings (e.g. nurseries)• Poor hygiene• Immunosuppression🧠 Mnemonic: “HOT KIDS” – Hygiene poor, Open skin, Tropics, Kids, Infections, Direct contact, Staph/Strep📌 Pathophysiology• Bacteria enter via broken skin• Staph toxins damage keratinocytes → vesicles → rupture → crusting• Spreads via scratching or contact with infected fluid or contaminated objects📌 Symptoms• Golden honey-coloured crusts on red base• Often starts on the face (nose, mouth), but can affect limbs• Itchiness, mild pain• Regional lymphadenopathy (especially in non-bullous form)📌 Differential Diagnosis• Scabies• Contact dermatitis• Herpes simplex• Chickenpox/shingles• Bullous pemphigoid• Cellulitis• Atopic eczema• Stevens-Johnson syndrome• Erythema multiforme📌 Diagnosis• Clinical diagnosis based on appearance and history• Swabs: only if– Infection is severe/recurrent– Suspected MRSA– Fails to respond to treatment– Recurrent cases → consider nasal swab for staph carriage📌 Management• Prevent spread: hygiene, no sharing towels, avoid scratching• Localised, non-bullous:– First-line: Hydrogen peroxide 1% cream– Alternatives: Topical fusidic acid or mupirocin• Widespread or bullous OR systemically unwell:– Oral flucloxacillin (1st line)– Alternatives: Clarithromycin/erythromycin if penicillin allergic or pregnant• MRSA suspected: tailor based on sensitivities• Recurrent: consider decolonisation if nasal carriage confirmed📌 Complications• Cellulitis• Lymphadenitis• Abscess• Staph scalded skin syndrome (rare)• Sepsis (rare)• Post-streptococcal glomerulonephritis• Acute rheumatic fever📌 Prognosis• Excellent with prompt treatment• Resolves in 2–3 weeks with appropriate antibiotics and hygiene• Untreated = prolonged infection and increased spread risk📎 More MSRA Resources for Impetigo📝 Revision Notes:https://www.passthemsra.com/topic/impetigo-revision-notes/🧠 Flashcards:https://www.passthemsra.com/topic/impetigo-flashcards/💬 Accordion Q&A Notes:https://www.passthemsra.com/topic/impetigo-accordion-qa-notes/🚀 Rapid Quiz:https://www.passthemsra.com/topic/impetigo-rapid-quiz/🧪 Topic Quiz:https://www.passthemsra.com/quizzes/impetigo/🎓 Full Dermatology Course:https://www.passthemsra.com/courses/dermatology-for-the-msra/📣 All these resources are part of the Dermatology for the MSRA course at👉 https://www.passthemsra.comHashtags#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQandANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #Impetigo #Dermatology #PassTheMSRA