Derm: Contact Dermatitis: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Contact Dermatitis🎧 A clear, high-yield breakdown of this common inflammatory skin condition caused by irritants or allergens – perfect for exam prep and real-life clinical scenarios.🧠 Key Learning Points📌 Definition• Contact dermatitis is a localised inflammation of the skin caused by direct contact with irritants or allergens, triggering either direct damage (ICD) or an immune reaction (ACD).📌 Causes & Risk Factors• Irritant Contact Dermatitis (ICD) – harsh soaps, detergents, acids, alkalis, solvents, water, powders, cement• Allergic Contact Dermatitis (ACD) – nickel, fragrances, hair dye, rubber, epoxy resins, formaldehyde, plants• Risk factors – atopic eczema, frequent handwashing, occupational exposure (e.g. healthcare, cleaning), female gender🧠 Mnemonic: “SOAP & NICKEL” – Soaps, Occupation, Atopy, Plants & Nickel, Irritants, Cosmetics, Kontact (spelled wrong on purpose!), Latex📌 Pathophysiology• ICD – direct skin damage → inflammation• ACD – delayed Type IV hypersensitivity → prior sensitisation → T-cell mediated immune reaction• Both involve immune cell activation and barrier dysfunction📌 Symptoms• Redness, itching (pruritus), swelling• Blisters (vesicles) in acute cases• Lichenification, scaling, fissures in chronic exposure• ICD – faster onset, burning/stinging, sharp borders• ACD – delayed onset, more itch, less-defined borders📌 Differential Diagnosis• Atopic eczema• Psoriasis• Fungal infections (e.g. tinea)• Seborrhoeic dermatitis• Scabies• Lichen planus• Urticaria• Drug eruptions• Bacterial skin infections📌 Diagnosis• Clinical diagnosis based on history & rash pattern• Patch testing to identify allergens in ACD• Biopsy rarely used – may help in unclear/chronic cases🧠 Tip: Rash often matches the site of contact (e.g. under watch, glove area)📌 Management• Avoid the trigger – cornerstone of treatment• Topical corticosteroids – first-line for both types• Emollients – restore the skin barrier• Topical calcineurin inhibitors (e.g. tacrolimus) – 2nd line for ACD• Phototherapy or oral steroids for severe/resistant cases• Occupational support & barrier protection in work-related cases🧠 Antihistamines = usually ineffective for itch here!📌 Complications• Secondary infection – bacterial or fungal• Chronic or recurrent dermatitis• Psychosocial impact – distress, self-esteem, work performance• Workplace disability in occupational cases📌 Prognosis• Good if the trigger is identified and avoided• ACD often worse prognosis – immune memory persists• Delayed diagnosis or continued exposure = chronicity• Some may need to change jobs if exposure unavoidable📎 More MSRA Resources for Contact Dermatitis📝 Revision Notes:https://www.passthemsra.com/topic/contact-dermatitis-revision-notes/🧠 Flashcards:https://www.passthemsra.com/topic/contact-dermatitis-flashcards/💬 Accordion Q&A Notes:https://www.passthemsra.com/topic/contact-dermatitis-accordion-qa-notes/🚀 Rapid Quiz:https://www.passthemsra.com/topic/contact-dermatitis-rapid-quiz/🧪 Topic Quiz:https://www.passthemsra.com/quizzes/contact-dermatitis/🎓 Full Course:https://www.passthemsra.com/courses/dermatology-for-the-msra/📣 All resources are part of the Dermatology for the MSRA course athttps://www.passthemsra.com – your high-yield, NICE-based revision hub 🚀Hashtags#MSRA #MSRARevisionNotes #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #ContactDermatitis #Dermatology #ICD #ACD #SkinHealth