Derm: Alopecia Areata: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Alopecia Areata🎧 A high-yield breakdown of this autoimmune hair loss condition – perfect for exams and real-world GP scenarios.🧠 Key Learning Points📌 DefinitionAlopecia areata = non-scarring hair loss condition caused by autoimmune attack on hair follicles.🔄 Typically presents as round/oval bald patches on the scalp or beard.📌 Causes & Risk Factors• Autoimmune cause• Associated with other autoimmune diseases (e.g., thyroid disease, vitiligo, T1DM)• Family history (20%)• Psychological stress may trigger episodes🧠 Mnemonic: “3 A’s” – Autoimmune, Associated conditions, Ancestry📌 Pathophysiology• T-cell-mediated autoimmune attack on hair follicles• Disrupts normal hair growth cycle, especially the anagen (growth) phase• Follicles remain intact (non-scarring), so regrowth is possible📌 Symptoms• Smooth, well-demarcated bald patches• Common on scalp, beard, eyebrows• Exclamation mark hairs: short, broken hairs tapering near the scalp edge• Nail pitting or ridging in ~10–15% of cases🎯 Key sign: Sudden, asymptomatic patchy hair loss📌 Differential Diagnosis• Androgenetic alopecia – gradual patterned loss• Tinea capitis – scaling, broken hairs, possible lymphadenopathy• Trichotillomania – irregular patches, different hair lengths, psychiatric context• Telogen effluvium – diffuse shedding📌 Diagnosis• Clinical diagnosis• Based on appearance, hair pull test, trichoscopy• Blood tests may be used to screen for associated autoimmune conditions• Biopsy rarely needed unless diagnosis unclear📌 Management• Topical/intralesional corticosteroids (first-line for mild cases)• Contact immunotherapy (e.g. diphencyprone)• Minoxidil (topical)• Phototherapy – PUVA (psoralen + UVA)• Wigs/camouflage as needed🧠 Refer to dermatology if >50% scalp affected🧠 Always assess for: • Other autoimmune conditions • Mental health impact – offer psychological support📌 Complications• May progress to: • Alopecia totalis – complete scalp loss • Alopecia universalis – entire body hair loss• Major psychological burden• Risk of relapse even after regrowth📌 Prognosis• ~80% may have spontaneous regrowth• BUT up to 75% may relapse• Negative prognostic indicators: • Early onset • Nail involvement • Extensive hair loss • Autoimmune comorbidity (e.g. eczema, asthma)🎯 Key message: Unpredictable course – shared decision-making is essential📎 More MSRA Resources for Alopecia Areata📝 Revision Notes:https://www.passthemsra.com/topic/alopecia-areata-revision-notes/🧠 Flashcards:https://www.passthemsra.com/topic/alopecia-areata-flashcards/💬 Accordion Q&A Notes:https://www.passthemsra.com/topic/alopecia-areata-accordion-qa-notes/🚀 Rapid Quiz:https://www.passthemsra.com/topic/alopecia-areata-rapid-quiz/🧪 Topic Quiz:https://www.passthemsra.com/quizzes/alopecia-areata/🎓 Full Dermatology Course:https://www.passthemsra.com/courses/dermatology-for-the-msra/📣 Hashtags#MSRA #MSRARevision #AlopeciaAreata #Dermatology #AutoimmuneHairLoss #MSRAFlashcards #MSRAQuiz #MSRAQandA #PassTheMSRA #HairLoss #ExclamationMarkHairs #MSRADerm #MSRA2025