7. Papulosquamous Disorders Part 2: Lichen Planus & Pityriasis Rubra Pilaris | Master the Boards 🩺 скачать в хорошем качестве

7. Papulosquamous Disorders Part 2: Lichen Planus & Pityriasis Rubra Pilaris | Master the Boards 🩺

📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:-t.me/conceptualmedicine009 📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/ Papulosquamous Disorders Part 2: Lichen Planus & Pityriasis Rubra Pilaris | Master the Boards 🩺 Papulosquamous Disorders Part 2 continues our deep dive into the high-yield world of scaling papules and plaques, focusing on the inflammatory conditions that define the "clinicking" experience for USMLE, NEET PG, MBBS, and FMGE. We lead with the prototype of interface dermatitis: Lichen Planus. This condition is classically defined by the "6 P's": Planar (flat-topped), Purple, Polygonal, Pruritic, Papules, and Plaques. A key "secret sauce" for the boards is identifying Wickham Striae—the fine, white, reticulated lines on the surface of the lesions—and recognizing its strong association with Hepatitis C. We also explore the Koebner Phenomenon and the potential for oral involvement, where "lace-like" white patches on the buccal mucosa can serve as a diagnostic hallmark. 🔬🏛️ The histology of Lichen Planus is a masterpiece of integrated pathology, featuring a "saw-tooth" appearance of the dermo-epidermal junction. We break down the Interface Dermatitis pattern, characterized by a dense, band-like lymphocytic infiltrate at the base of the epidermis, leading to the destruction of basal keratinocytes (Civatte bodies). We compare this to Pityriasis Rubra Pilaris (PRP), a rarer but equally high-yield condition. PRP is distinguished by its orange-red "follicular papules" that coalesce into large plaques, famously leaving "Islands of Sparing"—areas of normal skin amidst the redness. Understanding the "nutmeg grater" feel of these papules on the elbows and knees is a classic clinical clue often used in complex board vignettes. 🛡️🧬✨ Finally, we address Seborrheic Dermatitis, a common papulosquamous disorder linked to the yeast-like fungus Malassezia furfur. Unlike the silvery scales of psoriasis, seborrheic dermatitis presents with "greasy" yellow scales in areas with high sebaceous gland activity, such as the scalp (dandruff), eyebrows, and nasolabial folds. For the boards, "clinicking" through a patient with sudden, severe seborrheic dermatitis should raise a red flag for underlying HIV/AIDS or Parkinson’s Disease. By integrating the color and texture of the scale with the specific distribution patterns of these disorders, this session provides a definitive summary for mastering the second half of the papulosquamous spectrum. 🏥🧬🩺 #LichenPlanus #SeborrheicDermatitis #PRP #Papulosquamous #Dermatology #USMLE #NEETPG #MBBS #FMGE #SkinPathology #WickhamStriae #MedicalEducation #DermPart2