Casals Necklace pattern is seen in: (A) Thiamine deficiency, (B) Riboflavin deficiency, (C) Niacin deficiency, (D) All of the above
Answer is C. (C) Niacin deficiency # Casal collar or Casal Necklace is a clinical sign in which there is an erythematous pigmented skin rash in the distribution of a broad collar (dermatomes C3 and C4). It is seen in patients with pellagra.