💡 Pellagra is caused by Niacin (Vitamin B3) deficiency and is a high-yield topic for AIIMS, NORCET, NCLEX & Staff Nurse exams. ✨ Remember the 3 Ds 👉 Dermatitis – Sun-exposed, symmetrical lesions (⚠️ Casal necklace is pathognomonic) 👉 Diarrhea – Due to GI mucosal atrophy & malabsorption 👉 Dementia – Cognitive decline, hallucinations, memory loss (⚠️ Untreated → Death) 🩺 Treatment: Niacin supplementation 📖 Exam Pearl: Casal necklace = Pellagra 👉 Follow NursingAdvance for daily nursing MCQs,
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